Tech Reaction

3 Step Overclocking Guide – Bloomfield and Gulftown

Thumbnail 97 CommentsBy miahallen on September 7, 2010

Introduction

So many users are searching around the net these days looking for advice on how to overclock their new systems but don’t know where to start.  To help everyone out, I decided a how-to guide was in order.  Searching around forums can be confusing and intimidating.  There are so many people willing to give advice, but who can you trust?  It’s hard to know, and I’ve seen many users sent on wild goose chases because they are following advice that doesn’t solve or even address their specific problem. I’ve also seen too much trial and error overclocking, unless you get lucky it tends to be far too time consuming a frustrating. What I’ve attempted to do is create a very simple three step guide for overclocking Bloomfield and Gulftown based CPUs.  If you want to continue searching out other opinions, please consider each suggestion with caution. Some will undoubtedly be great, some will not.

Disclaimer

I am not responsible for any bad things that happen to you or your computer as a result of you following this guide, nor is techreaction.net.  My goal is for this guide to be a safe overclocking guideline, but the burden for damaged hardware lies on the user performing the overclock!  Overclocking can damage hardware and in most cases will void your warranties.

Prerequisites

In an earlier version of this guide, I requested that you have some basic knowledge of your motherboards BIOS.  While I have not addressed every motherboard on the market, I have included details for the top enthusiast brands.  But as before, please do not be afraid to get into your BIOS and have a look around, if you are ever concerned that you may have changed a setting erroneously, you can always load defaults, and start over.  Most boards have a CMOS reset button on them now-a-days, if not check your user manual for the location of the CMOS reset jumper…please ensure you know the location before getting started.

This guide is independent of your cooling system.  Whether you are using the stock Intel cooler or if you’re pushing to the extreme with phase change cooling, the basic steps remain the same.  One thing that is far too common are mistakes mounting your cooling system, specifically the application of the thermal interface material (TIM).  If you don’t have much experience mounting cooling apparatus, please refer to this excellent guide from Arctic Silver.

Methodology

Determining methods for finding a stable overclock are highly controversial, everyone has their own definition of a stable system, but when I refer to “stable” in this guide, I am referring to the stability of your selected “stability test.”  So for a power user or gamer who wants a reliable system that won’t ever crash due to an overclock pushed too far, you’d need to test with a program that will load all of the cores and threads applicable to your CPU, OCCT and IntelBurnTest are two popular choices.  OCCT uses the same algorithm as Prime95 but has a more friendly interface.  IntelBurnTest uses the Intel linpak binaries to stress the system and also has an easy to use interface.  In this guide I may use testing this is insufficient in your opinion.  It is only a guidline and if you feel more testing is necessary for your system, by all means feel free.

So with that in mind, we will attempt to isolate each portion of the system and overclock one step at a time.  This may seem time consuming at first glance, but rest assured this will potentially save you hours of troubleshooting and frustration. So go slow, and follow each step very carefully.

BIOS familiarization

If you’ve found my guide online, my guess is you’re looking for more than a basic overclock.  If you’re not, and all you’d like is something simple, please redirect your attention to your motherboard manufacturer’s website and download the latest overclocking utility.  For basic 10-20% overclocking, they work pretty well.  There is “Gigabyte EasyTune6“, “Asus TurboV EVO“, “MSI Control Center“, and “eVGA eleet“.  This guide is written to take it to the next level, for THAT we need to do the overclocking from the BIOS.

Speaking of which, before we begin, please check your motherboard manufacturer’s website for the latest version of your BIOS.  Usually enthusiast level boards will have BIOS engineers tweaking them for months or years to improve overclocking support.  Unless you have a reason to stay with your current BIOS, I’d update to the newest version.

If you don’t know how to access the BIOS, please refer to your motherboard’s owner’s manual for instruction.  While you’re there, find out how to “clear CMOS”.  As I mentioned in the introduction to this guide, it’s important you know how to properly “clear CMOS” before we begin.

Secondly, the first thing to do after powering up the new system is to enter the BIOS and find the “hardware monitor” area and verify the CPU temperature is reasonable based on your cooling.  If not, please power down the system and verify the mounting of your cooling apparatus (refer to the guide linked in the “prerequisites” section above).


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#Leave a comment 97 Comments
  • [...] I've run through these two guides: http://www.overclock.net/intel-cpus/…920-930-a.html http://www.techreaction.net/2010/09/…-and-gulftown/ I've tried both upping and lowering the QPI to every notch between 1.25 and 1.4v, have not been [...]

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  • Gregg September 18, 2010 at 5:02 AM

    Thanks for taking the time to write this up. I greatly appreciate it.

    Post Comment
  • [...] guide below by miahallen at the fantastic techreactions forums, is the clearest and most logical sounding [...]

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  • SBSHammond September 20, 2010 at 3:49 PM

    Thanks for the time in doing this for people like myself who may need some help, i understand alot more now, however my system is struggling with the settings, i dont know if im doing something wrong? i am getting to the point where im uping the bclk by ten and i can get up to 170 with it but the vtt needs to be right up @ 1.3v to do it, i tolk your suggestion of it maybe being a black hole in the bclk but uping any further and it doesnt help, if you can suggest anything it would be greatly appreciated, i only wanna achive a oc of 4ghz stable, i have a i7 930 gigabyte x58a-ud3r mobo, Many thanks…

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  • BJR2 September 21, 2010 at 7:38 AM

    I’ve just completed this guide. Stable 3.8GHz overclock on a i7 930. Phenomenal work, thank you so much.

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  • miahallen September 21, 2010 at 8:15 AM

    Glad I could help guys….keep it up!

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  • [...] around, I liked this guide for a real thorough way to find out the right voltages and frequencies http://www.techreaction.net/2010/09/…-and-gulftown/ I've also read that some CPU's don't like even multipliers, but I'm not sure about 930's. [...]

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  • [...] redoing my OC to achieve lower voltages. Here is a good guide I'm following somewhat. http://www.techreaction.net/2010/09/…-and-gulftown/ [...]

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  • [...] this step by step guide a try…u should easily be able to reach 4.0 stabily depending on ur RAM http://www.techreaction.net/2010/09/…-and-gulftown/ also u can try this template…hopefully u have capable ram (ddr3 1600) [...]

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  • Jeffrey Nichols September 27, 2010 at 5:44 PM

    Thanks so much for writing this. I’m going through the document now on my MSI X58 Pro-E. One tip for your readers. On this particular board MSI calls the IHO Voltage “NB Voltage”. Took me a while to figure that out.

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  • miahallen September 27, 2010 at 10:20 PM

    Thanks for the tip Jeffrey….I was only able to reference one board from each manufacturer for the terminology table I created. It’s pretty sad IMO that manufacturers can’t even commit to using the same terminology accross their own line-up, I’ve been advised that Asus’s normal boards don’t appear to match their ROG series boards either…..too bad, it makes things pretty confusing at times.

    Best of luck with your OC, if you have any questions, feel free to post in our forum and I’ll try to help.

    Post Comment
  • [...] that link was for Lynnfield CPU's, here's the one for Bloomfield (which is what you have) [...]

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  • George October 1, 2010 at 11:48 AM

    This guide is just excellent! Thank you.
    I followed your guide and achieved a stable OC in my Intel DX58SO mobo with i7 920 @ 3.7GHz, I ran mem-test for 8Hrs and OCCT Linpack has been running for 18+ hours max temp according to real temp is 79°C.
    Clock Frequency: 185 MHz
    Turbo boost: Disable
    multilplier: 20
    Speed: 3.70GHz
    Memory Multiplier 8
    Mem speed 1482 MHz
    QPI Strap 4.8 GT/s
    Qpi data rate: 6.7 GT/s
    Voltages
    Processor Core 1.3375v
    memory: 1.65v
    QPI/Processor uncore: 1.20v
    IOH Core: 1.15v
    Processor Overrides:
    Static CPU voltage override 1.3375v
    Dynamic CPU Voltage Offset 0 mv
    CPU Vreg Droop Control Low Vdroop
    Max non turbo Multiplier 20
    CPU Idle state: High power
    Turbo Boost Technology Disable
    CPU VR Current Limit override Disable

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  • [...] be different. Here is a good guide to use, along with the guides in the Intel Essentials thread. http://www.techreaction.net/2010/09/…-and-gulftown/ As far as PSU is concerned, a lot of that is going to have to do with which graphics cards and the [...]

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  • Mike October 8, 2010 at 10:20 AM

    I really appreciate all the work that went into this! As a newbie to overclocking, I have a question. Step 1 sets the CPU clock ratio to x15. Then later, bclock is adjusted from 133 to 150. The CPU frequencies expected in CPU-Z are listed, but I must be missing something in my calculations. Should not all frequencies be 2250 (CPU clock ratio 15 x bclock 150MHz)? Sorry if this question is really elementary, and I’m missing something simple.

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  • miahallen October 8, 2010 at 11:39 AM

    Thanks for the comments Mike….you are absolutely correct….something got mixed up with my math I guess….this has probably been confusing a lot of people, but your the first one to point it out to me, so that you. I’ve edited the guide appropriately….thanks.

    Excuse my while I go fire my proofreader :-P

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  • Mike October 8, 2010 at 12:33 PM

    More than happy to help, and glad it may have cleared up some confusion. Again, this guide is a lot of great work, and I hope to put it to good use. Thanks much for the effort.

    Post Comment
  • NICK October 8, 2010 at 12:51 PM

    Just want to say thank you!

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  • Sparks October 12, 2010 at 6:13 PM

    Really good guide thanks. Just a question – you mention CPU / VTT in sections 1 & 2. I’ve assumed you meant QPI VTT – is this correct?

    Thanks again!

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  • miahallen October 12, 2010 at 7:27 PM

    Thank you Sparks….you are correct….I’ve fixed it :-)

    Post Comment
  • [...] [...]

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  • [...] thats when the BSOD codes can really help get you over the line. here is some good reading to… http://www.techreaction.net/2010/09/…-and-gulftown/ __________________ Core i7 4GHz+ ClubThe Core i7 100% Stability Club5800 Ownerz Club [...]

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  • i7-930 Stable 4MHz on 1st day of overclocking October 15, 2010 at 1:15 PM

    [...] the 4MHz setting. But I'm wanting to learn more about the settings, and overclocking. I've read this guide, which is interesting, and goes with the idea of finding one limit at a time. Planned [...]

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  • [...] found this guide very helpful. http://www.techreaction.net/2010/09/…-and-gulftown/ __________________ 4 GHz Overclock Club Core i7 4GHz+ [...]

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  • [...] – different approaches, I've done both: http://www.clunk.org.uk/forums/overc…beginners.html http://www.techreaction.net/2010/09/…-and-gulftown/ The first is easiest to get a nice overclock with very little effort. I'd never overclocked, and [...]

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  • [...] so I am following the popular "3 Steps to overclocking guide" My steps I took are this (from the 3-step guide): – I determined I would like to get to 4.2ghz…4.0 is acceptable too 1) QPI/VTT voltage to 1.2V [...]

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  • Overclock gids voor i7 950 + REX III October 19, 2010 at 10:56 AM

    [...] 120BLZ….4blz 3 Step Overclocking Guide – Bloomfield and Gulftown | TechREACTION Ik zou zeggen volg die guide, in het kort; programmas: LinX/Intelburntest/OCCT , realtemp, cpu-z [...]

    Post Comment
  • [...] like you're not alone. Also, here's a pretty good overclocking guide, definitely worth the read: http://www.techreaction.net/2010/09/…-and-gulftown/ [...]

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  • [...] stability? How did you reach that QPI/VTT voltage. I know the interweb is full of guides but this one is great. FWIW – My meh overclocking C0 920 does 4.0 on a bit less than 1.35v [...]

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  • Steve Adams October 27, 2010 at 12:10 PM

    Thank you for a well written article!
    I have an Asus Rampage III Formula and I was able to follow the direction in this article and translate the setting names from Gigabyte to Asus. But I don’t know what to do for the section:
    “Isolate the bclock from the memory”
    “Sample #1, #2, and #3 – set the memory to 6”
    Does this mean so I should set 6 in the System Memory Multiplier or in the case of the Asus board: set 800 in the DRAM Frequency because 133 x 6 = 798?

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  • miahallen October 29, 2010 at 12:52 AM

    Thanks Steve….you are correct :-)

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  • [...] most informative while doing my research before attempting this overclock! I also used this guide: http://www.techreaction.net/2010/09/…-and-gulftown/ Those two guides helped me the most, along with random tidbits I gained from forum posts here and [...]

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  • MediPack November 1, 2010 at 8:46 PM

    This guide is awesome!, the clearest one i have seen so far, and i will defiantly try it with my new system…. however it seems that I7 930’s are getting a better OC than the I7 950’s or am i just miss reading? XD

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  • Paul McGowan November 8, 2010 at 4:03 PM

    THANX for the Guide…
    This is the BEST tool out there…Very clear and easy to understand…
    I have my i7 950 running at 191×21 giving me a 4.01 which is more than plenty for me…
    I only had to set vCore to 1.275 and UnCore to 1.25 and then of course DRAM to 1.60 and I left everything else on Auto…
    No Errors!!!
    Thanx =)

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  • X58A UD3R boot up "issue" November 10, 2010 at 1:22 PM

    [...] Also I've recently been through the "3 Steps To Overclocking i7's" and now am running OC settings: 3 Step Overclocking Guide – Bloomfield and Gulftown | TechREACTION I'm at work at the moment but I can post up my FULL bios settings from every page if that would [...]

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  • Oliver Sumpton November 12, 2010 at 1:52 AM

    I’ve searched high and low and this is totally the holy grail of i7 overclocking guides.

    miahallen: I’m gonna snag a Core i7 950 for a Cinema 4D render box. What X58 Gigabyte motherboard should I get if I want to get that %95 out of this tutorial.

    Note: my other requirements are fairly low. I just know I’ll regret it if I have the specs to properly heat up some silicon :)

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  • miahallen November 12, 2010 at 4:19 AM

    Thanks again for all the positive feedback guys/gals :)

    @ Oliver, the X58A-UD3R is an excellent budget board and will get you 95% and more ;)

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  • [...] seems awfully high, what is your vcore at at 3.6? If you haven't already take the time and read this At first I tried the quick and dirty method, but wasn't that happy with my voltage and temps so I [...]

    Post Comment
  • [...] Following every step of Miahallen’s ‘3 Step Overclocking Guide’ (link below) was a breeze and taught me a lot about my PC. http://www.techreaction.net/2010/09/…-and-gulftown/ [...]

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  • [...] streamlined guide to get this sucker going at 4Ghz? Maybe break some of this down for me? I'm using This Guide right now, but still finding myself saying ***. I am using my sig rig for this attempted OC and [...]

    Post Comment
  • [...] the qpi? Sent from my SAMSUNG-SGH-I897 using Tapatalk I followed this guide this time around, http://www.techreaction.net/2010/09/…nd-gulftown/3/ Reason I mention the above guide is because in regards to QPI, I haven't had to raise mine passed [...]

    Post Comment
  • [...] this guide to heaven, http://www.techreaction.net/2010/09/…nd-gulftown/3/ [...]

    Post Comment
  • [...] about a week. I've got lots of tech background as well. I've been following miahallen's excellent 3-step guide, but alas, I'm stuck at "step 1: maximizing bclock and uncore freq". The only way I can [...]

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  • Anonymous November 23, 2010 at 10:36 AM

    [...] [...]

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  • Rampage III CPU wird zu warm - Forum de Luxx November 24, 2010 at 9:57 AM

    [...] [...]

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  • [...] you some beginner info) Voltage Guide for Core i7(Useful Info to Know when OCing) Bloomfield and Gulftown 3 Step Overclocking Guide(I by far found this one the most useful, and is probably more like what you were looking for) [...]

    Post Comment
  • OC effekt på windows? December 6, 2010 at 11:02 AM

    [...] så småt begyndt at lege med min I7 920'er. Har fulgt en fulgt en 3 step guide som jeg fandt her: 3 Step Overclocking Guide – Bloomfield and Gulftown | TechREACTION Ville så lige hører hvad effekt en formatering og ny installation af windows kan have på de [...]

    Post Comment
  • OC af I7 920 Bloomfield. December 6, 2010 at 3:49 PM

    [...] oc af mit system. Og er ret ny hvad det angår. Jeg har fulgt denne guide fra techreaction.net: 3 Step Overclocking Guide – Bloomfield and Gulftown | TechREACTION Forlanger ikke det vilde af mit system da jeg for det meste kun spiller og jeg er ikke ude efter [...]

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  • [...] < 70C safe 24/7 normal usage < 75C safe stability test temps < 85C Check out this nice OC guide by miahallen __________________ Upgrade Path: White Gold Engagement Ring with 1/2+ Carat [...]

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  • [...] are good temps? I get max temp of 80 at 4.2, I would worry about low 70's. Check out this link: http://www.techreaction.net/2010/09/…-and-gulftown/ __________________ 4.2ghzBuy My P55 FTW!!P32,684**-~ i7 950 Overclockers Club [...]

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  • [...] steam is TheCannibal DO NOT use those presets in the mobo. They are horrid. http://www.techreaction.net/2010/09/…-and-gulftown/ Read this. __________________ i7 950 4.4Ghz 1.4v 24/7 i7 950 4.25Ghz 1.3v Mouse: Logitech [...]

    Post Comment
  • [...] right, after following this guide from techreaction (since I had used the other one previously), I now know that other than a few more things to keep [...]

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  • Johan December 12, 2010 at 9:31 PM

    miahallen, thanks for an excellent tutorial.

    1) Excuse me if I’m mistaken (it’s getting quite late here), but you mention on page 4 “You now have the following settings locked in; QPI/VTT voltage, IOH Core voltage, memory voltage, QPI clock ratio, memory ratio, and memory timings.”

    When exactly did we “lock in” the QPI clock ratio? Is it on page 2 where you mention “So I never run the QPI clock ratio beyond x36, with the bclock at 200MHz this would result in the QPI running at 7.2GHz which is plenty for anything you might throw at it.”?

    If that is the case wouldn’t it be worth reminding readers on page 4 that they actually need to change QPI clock ratio from “Auto” to the one of the three options that is closest to their current BLCK x 36? Because they haven’t been told to change it at any time.

    Again, maybe I’m just missing something obvious.

    2) Another thing I noticed is on page 4, if I continue where my first quote ended “That means when we are looking for our highest CPU frequency, there are only two variables we need to play with: bclock and CPU voltage.”

    Actually three variables, as we’re changing the CPU clock ratio just seconds later (for the first time since we lowered it initially).

    3) One thing I miss in this tutorial is advice on what to do if your far from reaching your max stable BCLK with the multiplier suggested, e.g. 21 in example 2. Let’s say you reach your maximum stable CPU speed at 21 x 180 with the Vcore set to it’s max within safe range, but you have initially tested your max BCLK to be 210. Then it might be time to play with different CPU Clock Ratios, or am I mistaken?

    Post Comment
  • miahallen December 13, 2010 at 3:31 AM

    Thanks for the comments Johan.

    1) My suggestion with QPI, is to set it to the lowest multiplier available (but not “slow mode”). You’re not missing any explicit instruction…..it’s more just the implied suggestion that you quoted.

    2) I don’t consider this a variable (the CPU multiplier) because most people start with an intended CPU multiplier at the beginning.

    3) My guide could go on with further instruction for fine tuning after step 3, but I think by this time the reader [i]should[/] feel comfortable enough to do that without instruction.

    However, going with a lower multiplier and higher blcock would only really be advantageous if done in order to attain a more effective memory speed. There isn’t any other tangible (and even moderate memory speed increases are hardly noticeable day to day) benefit from moderate block increases.

    The benefit of keeping the bclock lower on the other hand is fairly tangible in the voltage/temperature/power consumption sense. If those are at all important to you, I’d stick with the 180×21, as opposed to higher bclock/lower multi.

    If you have any more questions, please feel free to post in the forums :-)

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  • [...] will be : 23xBCLK. default is 133. here is a guide for you, should cover everything you need. http://www.techreaction.net/2010/09/…-and-gulftown/ [...]

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  • [...] you want a good guide by a well respected individual who frequents this board, please read this: http://www.techreaction.net/2010/09/…-and-gulftown/ Everything you will ever need to overclock your 980. [...]

    Post Comment
  • Michael VanGilder December 24, 2010 at 9:55 PM

    3 GHz core i7-
    I am running on an (Intel® Desktop Board DP55KG) motherboard, so I have slots for 4 ram sticks dimms. My question, Is it better to go with a 16 Gig kit DDR3 (4 x 4 GB) or to leave the 4th slot free with a 12 GB kit DDR3 (3 x 4 GB). The difference in cost is $70. And since the 12 GB kit is $230 the increase would be 30%. So, would there be an increase in performance worthy of the increase. I put percentages in there because we all have different opinions on $70, but 30% is the same for all.

    Post Comment
  • EnJoY January 1, 2011 at 8:39 PM

    Johnny, your questions would be much better suited for the forums where they will be seen more easily and answered.

    Please register: http://www.techreaction.net/forums/

    Then make a new thread with this information.

    Post Comment
  • [...] I would recommend the slow and steady method as opposed to jumping right in without knowing any info on your chip and how much VTT/Vcore is needed. I recommend using the guide below and start off small and work your self up. 3 Step Overclocking Guide – Bloomfield and Gulftown | TechREACTION [...]

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  • [...] guide here and it works like a charm. Just follow the directions and you should be good to go. http://www.techreaction.net/2010/09/…-and-gulftown/ [...]

    Post Comment
  • [...] up to row 64 on my "Attempt Log" spreadsheet following Miahallen's Overclocking guide. Now stable, and following the guide step-by-step has led to vastly superior results than my first [...]

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  • [...] the actual OCing starts on the 3rd. Though it does do a really good job of explaining everything. http://www.techreaction.net/2010/09/…-and-gulftown/ And if you get any BSODs, this is a quick n' dirty guide that I found a few times on here. But [...]

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  • [...] it this one? It's the most in depth one I found. I also used this guide for my 930/UD3R. __________________ The Official CM Storm Scout [...]

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  • Mark January 10, 2011 at 2:38 PM

    A few observations.

    It reported that the highest stable QPI speed is 8000GT/s. Uncore speed should be less than 1:1 ratio to QPI speed, ideally 8:9 ratio. The more 1:1 ratio, the less stable. The nearer you get to 4Ghz QPI speed the less stable as well.

    If memory 1600 then Uncore be 3200 and QPI has to be 3600 or higher but not too high or is that unstable too.

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  • [...] used this guide as a foundation to oc my Core i7 950: http://www.techreaction.net/2010/09/…nd-gulftown/4/ It wants quite a bit more Vcore to get to 4Ghz. I have only messed with a few settings, but I'm [...]

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  • [...] cooling on a Asus P6X58D Premium with 12GB G.Skill Ripjaws DDR3-1600 DRAM (3 x 4GB). I followed Miahallen's Guide to Overclocking, and found the BCLK for my board seemed ok up to 210 (overnight IBT test), so I set that as the top [...]

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  • [...] memory speed. For more info I've found Mihallen's guides to be a pretty good starting point. http://www.techreaction.net/2010/09/…-and-gulftown/. You can also click on the Asus link in my sig for a thread with tons of info on overclocking with [...]

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  • fleischverpackung January 12, 2011 at 1:04 PM

    This guide esplains very well how the different cpu parts effect each other during oc. You get clocks and voltages for some processors to try with, but more importantly you gain better understanding for later on experimenting and fine tuning the machine.

    I really enjoyed this guide, thanks for sharing!

    Post Comment
  • [...] out this guide And I strongly advise you to not do the quick and dirty method, take the time and do it rght and [...]

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  • TIm January 13, 2011 at 2:54 AM

    This guide doesnt mention Vcore, jsut VTT? So do I just leave the Vcore on auto and adjust the VTT each unsuccessful test?

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  • TIm January 13, 2011 at 2:59 AM

    Im an idiot, missed the last page. i get it now, find stable VTT voltage at low frequency, then find max CPU frequency at lowest Vcore. Awesome. Great writeup.

    Post Comment
  • [...] right, if you feel like trying again, try the method described in this guide: http://www.techreaction.net/2010/09/…-and-gulftown/ I usually always use this methodology and it takes most of the "guess what setting is [...]

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  • spookydoodle January 21, 2011 at 11:28 AM

    Im stucked here: “Sample #2 – set the uncore clock ratio to x20″ with Rampage II Extreme/i7 930. I dont find a place to adjust that.

    Post Comment
  • EnJoY January 21, 2011 at 3:08 PM

    Your questions would be much better suited for the forums where they will be seen more easily and answered.

    Please register: http://www.techreaction.net/forums/

    Then make a new thread with this information.

    Post Comment
  • [...] think you should start with a nice overclocking guide before you ask for help. People here will help you, but we will not hold your hand through the [...]

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  • [...] you chip has what ittakes to get to 4.5 GHz here is another good guide that will get you there… http://www.techreaction.net/2010/09/…-and-gulftown/ Good luck and have fun!! __________________ _.=4 GHz Overclock Club=.__.=The Core i7 100% [...]

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  • [...] allow you to regain stability.] If you are not familiar with the guide, you can find it here.. http://www.techreaction.net/2010/09/…-and-gulftown/ Good luck!! __________________ _.=4 GHz Overclock Club=.__.=The Core i7 100% Stability Club=._ [...]

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  • [...] settings, lots of good guys that will help. Here's a guide someone linked to if you're interested, http://www.techreaction.net/2010/09/…nd-gulftown/3/ good luck [...]

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  • [...] a 4267MHz at 1.375V. http://valid.canardpc.com/show_oc.php?id=1683337 I followed this guide: http://www.techreaction.net/2010/09/…nd-gulftown/4/ Prior attempts were sloppy and got to around 3.8GHz, but now I have my new WC setup so I'm trying [...]

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  • Hombre April 29, 2011 at 4:48 PM

    Thanks dawg! Very good info! Good site too!

    Post Comment
  • CrazyCanuck June 2, 2011 at 6:06 PM

    Thank you so much for this guide, it was so much help. This was my primary overclocking resource but I would also like to point out my other two sources so that it may help noobs like me in the future.

    1) http://vip.asus.com/forum/view.aspx?id=20081220191040237&board_id=1&model=P6T+Deluxe&page=1&SLanguage=en-us

    2) http://www.overclock.net/intel-cpus/787341-comprehensive-i7-overclocking-guide-explanations-classified.html

    I thought overlocking would be easy but even with this guide it took me a couple of days of tweaking to perfect my overclock. My goal was ultra conservative and was to only reach and perfect a 3.6GHz overclock on my i7 920 rig.

    My final settings were:

    bclk: 180 Mhz
    multi: x20
    dram freq: x8 (6 Gb Corsair XMS3 1600MHz 8-8-8-24)
    Vcore: 1.8750
    QPI/dram: 1.2000
    DRAM Bus Voltage: 1.50

    Max Temp: 70 C (includes ambient temp; CM Hyper 212+)

    I was very suprised that I was able to get a stable system lowering this guide’s suggested Vcore from 1.2000 V to 1.8750 V. I was only able to do that after I dropped my DRAM BUS Voltage to 1.50 V from Corsair’s suggested 1.65V. I figured that if my ram was factory tested to run at 1600MHz at 1.65V, i should be able to lower the voltage because my blck only allows for a DRAM speed of 1440MHz and I wasn’t going to try to push my RAM beyond factory specs (again, I’m being ultra conservative). I think lowering the DRAM bus voltage gave me some headroom because where I couldn’t lower the Vcore below 1.2000V before, I could do it afterwards.

    Also, why does ASUS lock the minimum QPI/DRAM voltage at 1.2000V?

    I was hoping to lower that too but couldn’t because it was locked. I want to have 3.6GHz running as low temp as possible.

    My rig passed IBC and memtest86+ running each for over an hour without problems.

    I want to thank you again for this awesome guide. I hope there will be guides like this one the next time i need to OC (hopefully not for another 10 years).

    Peace

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  • Greg July 12, 2011 at 8:53 PM

    When considering the IOH Core voltage, should I consider my 2 GTX 590’s to be 4 cards since the both have 2 GPUs?

    Post Comment
  • miahallen July 12, 2011 at 11:26 PM

    Hey Crazy Canuck…glad it worked for you :)

    Hey Greg, you should follow the direction for two cards ;)
    Nice HW BTW :D

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  • Greg July 13, 2011 at 6:14 AM

    Thanks miahallen……..I went “high end” on this build (finally got a job). I also have the 990x CPU (cooled off with a Hydro H80) with 24gb of Dominator GT CAS9 (DDR3-2000).

    Should I just follow the settings/instructions in your guide or can you provide any additional instructions/recommedations that should be applied based on these specific components.

    I know you can’t possibly provide solutions for every build, but your assistance is putting you that much closer to getting on my Christmas card list.

    But honestly……your guide is the bomb!!!! It’s been the easiest one to decipher so far. I’m just glad you are continuing to monitor the posts.

    It’s pretty apparent that you have inadvertently have become the “Noobie Savior”.

    Post Comment
  • miahallen July 13, 2011 at 9:42 AM

    Thanks for the kind word Greg. My advice for someone with your HW is to not be too concerned with high bclock frequency….you have the luxury of the unlocked multiplier on your chip and you need to use that to your advantage. The process really doesn’t change at all, except that you can pretty much blow past step 1 and start on step two :)

    Can you start a thread in the forums (in the “Intel” section) and list your full system specs (with full memory configuration details), I’ll catch up with you there :thumb:

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  • Core i7 Overclocking Guide For Beginners July 30, 2011 at 3:28 AM

    [...] [...]

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  • Richard October 22, 2011 at 11:52 AM

    Best OC’ing guide for Bloomfield I’ve found, used to OC a lot on my old P4 system but got out of touch and this has made the whole process easy and most importantly I actually understand the connection between everything so can fiddle on my own now. Thanks so much!

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  • Dragos November 19, 2011 at 1:16 PM

    Best OC guide. Finally I understand how it works my PC. :) )

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  • Kim November 27, 2011 at 6:52 PM

    Hi, i have the 990x Ans like to oc it to about 4.6 GhZ
    Now i read this guide many Tines i ended with one question.
    The 990x has an unlocked multiplier. How should i overclock with
    leaving THE BCkl and voltages low and turning up just the multiplier?
    What more should i do??

    Thanks
    Kim

    Post Comment
  • Luke December 3, 2011 at 5:47 PM

    Hey mate,

    Thankyou very much for this quide im completly new to oc and I was able to understand this after re reading a few times.

    Couple of questions..

    I forgot to turn off turbo boost during the first 2 steps would this have an effect when doing my bclock setting?
    i didnt set my qpi/vtt voltage to max while finding my best bclock so I could have some headroom while doing my ram, turned out I didnt need to touch the voltage while doing memory.

    Snould I go back and redo my bclock with the max voltage?

    Cheers

    Post Comment
  • Brian December 12, 2011 at 3:06 PM

    First: Thank you! Just trying to get into overclocking and your guide is fantastic!!

    Second: Why do we lock the desired uncore right away versus increasing it with DRAM later?

    I’m following the guide and beginning to overclock bclock. However, if QPI/DRAM voltage is set to 1.2V I can’t post if uncore is set to my desired uncore, but I can post if it’s simply set to double my DRAM frequency. I’m wondering if this is okay for the time being and is something I can adjust later.

    Post Comment
  • miahallen December 12, 2011 at 3:14 PM

    Hey Brian, good questions. The reason is pretty simple….I wanted to make a three step guide, not a four step. Tying the uncore to the bclock in step one (and not to the memory in step two) makes step two possible.

    If you don’t tie them together in step one, then in step two, when you reach instability, you will not know whether to increase QPI/VTT voltage, or DRAM voltage ;-)

    Please feel free to ask more questions, but please do so in the forums where it’ll get more visibility :-)

    Post Comment
  • sipicka December 25, 2011 at 9:14 PM

    i7 950 4.4GHz

    Post Comment
  • Avalance January 5, 2012 at 3:11 AM

    Man, I am completely lost, is there anyone with screen shout of a working Asus BIOS and a i7 930 and dual ati cards.

    Post Comment
  • Darby Gray January 13, 2012 at 8:28 PM

    I did the first step but couldn’t pass bclk of 184 with my qpi vtt maxed at 1.45. I have a 920 D0 and evga x58 board. It wouldn’t pass intelburntest max 3 loops like you suggested. Any tips? Anything else to modify to get it higher before I go to step two (memory)?

    Post Comment
  • Darby Gray January 13, 2012 at 8:42 PM

    Hmm. Continued on to step two. Can’t get it to post past 160 bclk with dram at 1.65 and the same qpi vtt maxed from the first step of 1.45. Any tips? I have corsair xms3 ram 1600 3×4 gb. Running 9/9/9/24/74/1T timings to achieve 1600.

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  • Darby Gray January 13, 2012 at 8:55 PM

    I am retarded (yes here come everyone’s comments on the matter). I missed te text about different board configurations and where gigabyte qpi vtt is different on evga (there it is CPU vtt voltage). I had been increasing qpi pll vcore instead. Let’s see where this goes.

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