I was able to run my system upto 3.74 Ghz (vCore 1.42) without any problems in all benchmark programs (3DMark05) and Sandra 2007 memory tests ran fine. But when I run Prime95, I would get errors in Test 2 or Test 3.
So I try various BIOS changes and still fails Prime95 until I drop back down to 3.3 Ghz -- this is basically the settings suggested in Wuzy guide.
CPU temps during Prime95 are consistantly pretty low 95 f.
I've tried to keep the memory timing around DDR2-1000Mhz (Patriot RAM is rated to that at 2.2v PC2-8000).
Any attempts to go beyond vCore of 1.42 results in NO POST (have to power off and hit Insert during power up to reset BIOS). I monitored the vCore while running Prime and I don't think it fluctuated much 1.39-1.41 is what it reported.
The PSU is a Silverstone 650 Watt, watercooling is Swiftech 1/2" tube dedicate CPU loop.
Seeing as the RAM speed is very close to the same setting between the 3.3Ghz and 3.7Ghz (also tried 3.6Ghz CPU with RAM at 4X249Mhz = 996Mhz) I'm not sure if this is a RAM problem, CPU problem, or motherboard problem -- like I said nothing is being reported as hot and nothing is hot to the touch so I don't know where to check next.
Any suggestions (followed the Core 2 overclocking guide very closely). Only question I had was on memory adjustments -- since I have the P5W DH the guide suggests leaving DRAM timing to SPD? Is this correct?
Rob.
So I try various BIOS changes and still fails Prime95 until I drop back down to 3.3 Ghz -- this is basically the settings suggested in Wuzy guide.
CPU temps during Prime95 are consistantly pretty low 95 f.
I've tried to keep the memory timing around DDR2-1000Mhz (Patriot RAM is rated to that at 2.2v PC2-8000).
Any attempts to go beyond vCore of 1.42 results in NO POST (have to power off and hit Insert during power up to reset BIOS). I monitored the vCore while running Prime and I don't think it fluctuated much 1.39-1.41 is what it reported.
The PSU is a Silverstone 650 Watt, watercooling is Swiftech 1/2" tube dedicate CPU loop.
Seeing as the RAM speed is very close to the same setting between the 3.3Ghz and 3.7Ghz (also tried 3.6Ghz CPU with RAM at 4X249Mhz = 996Mhz) I'm not sure if this is a RAM problem, CPU problem, or motherboard problem -- like I said nothing is being reported as hot and nothing is hot to the touch so I don't know where to check next.
Any suggestions (followed the Core 2 overclocking guide very closely). Only question I had was on memory adjustments -- since I have the P5W DH the guide suggests leaving DRAM timing to SPD? Is this correct?
Rob.