I did some tests of a largely unknown synthetic diamond-based Thermal Interface Material by Innovation Cooling. I compared it to the most well known and most widely used thermal paste, Arctic Silver 5.It’s a small 1 gram tube of very viscous paste which works best when spread with a lot of pressure and not by manual spreading.
Intel Core i7 920 @ stock clock speed
MSI X58 Pro-E
Zotac GTX 275
Western Digital Caviar Black 640GB
OCZ Vertex 30GB
I am measuring ambient temp from an intake point that is blowing directly onto the CPU heatsink. The Arctic Silver 5 has had plenty of curing time and many load/idle and on/off cycles. This is a fresh application of IC7. I was unable to compare the two after giving IC7 a good amount of curing time due to some changes to the system configuration that would invalidate the previous results. However, I am awaiting a 24 carat tube which I will test again with results after an appropriate curing time included.
I used a calibrated infra-red thermometer for measuring ambient temperature. Ambient was taken at 4 points around the intake fan on the side of a closed case and averaged out. This was done at the start and end of a series of tests (ie. stock and undervolted runs) and then the two averages were averaged again to get the mean ambient temp for the test period. Due to the fact that I can’t measure the exact same 4 locations every time, nor can I account for the slight variations during a run except by using averages, ambient temp should be assumed as accurate to +/- 1C.
The undervolted runs are at 0.16V below stock. Hyperthreading was disabled for all tests to reduce strain on the shockingly poor Intel stock heatsink. Prime95 Small FFTs was used as the load for all tests. Clock modulation via Real Temp was used to reach load of ~50% and no changes to the Prime95 run (still 4 worker threads) were made in addition to this. Real Temp 3.5 was used for monitoring core temperatures with Core 1 as the reference temperature by which all other readings were calibrated to align with throught the entire temperature range. All temps shown in the graphs are delta to ambient.