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 Lynnfield 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 the prior 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 that 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 “prerequisits” section.
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I was directed here from site listed(overclock.net) and this helped a lot with terminology and so forth. I basically set my BLCK to 200 and multiplier to x20; keep in mind I have a Lynnfield i7 870 @ 2.93ghz. Well it got my CPU up to 4021mhz= 4ghz just as I wanted. Temps are great… Load temp for CPU is constant 53c & Cores depend on game/what I’m doing, but never go above 50c & Idle Temps are 30-35c. This was proved so with the Intel Burn Test(CPU up to 75c / Cores up to 65-70). Thanks to my awesome liquid cooling kit I installed(EK-240 HFX Advanced Liquid Cooling Kit) really got my temps into check and I love itttt… OC’d my CPU and OC’d my GPU with no problem now. Thanks for the thorough runthrough of Lynnfield and overclocking in general. This was my first time overclocking both my processor and video card. I know this is an old post/thread, but still wanted to leave a comment.
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This really helped me overclock my i7-860 to 3.8 ghz with hyper-threading on. Fantastic. Looks like I’ve just extended the use of my cpu/motherboard
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ps2 I have raised the cpu voltage from bios BUT when i do that thermal throttling became enabled and locked again..so it seems thats the main reason ( when i try to change cpu voltage, thermal throttling automatically become enabled and locked )
I have tried to change all other voltages ( manually ) and thermal throttling is not locked, BUT when i try to change cpu voltage then its locked
and multiplier changes from x15 to x9
I have loaded optimized AHCI settings again ( bios )..and put 800 Mhz DDR,
x15, VTT to 1,2 V, restarted computer and from windows ( Oc tuner ) raised cpu voltage
to 1.25 V. and then raised bclk from 133 to 150, then to 160 and then to 167 and
then everything crashed again like the first time ( blue screen).
help!
new post : http://www.techreaction.net/forums/intel/7753-overclocking-i5-750-a.html
Can you raise the CPU voltage in the BIOS and then resume OCing in Windows?
If you have more questions, please post a new thread in the forums and we can assist you furthur
G.Skill Ripjaws F3-12800CL7-2GBRH, 4GB (2GBx2)
Asrock P55 deluxe3 , Intel
G.Skill Ripjaws F3-12800CL7-2GBRH
cpu I5 – 750
ssd muskin chronos
cooler Zalman Performa CNPS10X
radeon hd 5770 Msi Hawk
I have loaded bios optimized AHCI settings, put CPU clock ratio X15, memory to 6×133 = 798 ( 800 ),
VTT to 1.2, all others voltages are to auto mode, after that restarted the system and went back to bios where i adjusted bclk from 133 to 150, but then when I saved and reeboted I saw that my CPU clock is
downgraded to x9…
I have discovered that when i put to manual mode to set bclk, option thermal throttling is automatically enabled and it is not possible to disable it, the only way to do this is to load default bios settings again.
It seems that that function makes a problem.?!
so After that I have done smtg different : have loaded the optimized AHCIsettings ( thermal throtting is disabled ) and have done everything from the beggining but this time i downloaded octuner for Asrock, and tried to raise bclk from windows ( oc tuner ) , i have managed to raise it from 150 to 160, everything was stable ( real temp, Intel burn test 3x ), after that tried to raise it to 170 and computer crashed ( blue screen ),
from the second time I raised it to 165 ( everything stable ) .. 167 crashed again in first 10 seconds..
any suggestion?
ps I have also tried to downgrade bios …
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[...] Miahallen at TechReaction wrote some of the best overclocking guides I have seen. Read through them, follow the steps, and you should learn alot along the way. Here is a link for the Lynnfield guide. 3 Step Overclocking Guide – Lynnfield | TechREACTION [...]
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