After running it on blend for 2 5-hour tests, both times my CPU 1 ran the full duration with 0 errors but the second CPU would encounter an error within 30 mins to an hour. I currently have my FSB set to 1720 in the bios (~4.083 GHz) and the ram unlinked at 800 (it's 800 MHz DDR2). The Vcore voltage is set to 1.41v and everything else (VTT, Memory voltage, etc.) is set to auto. I originally had the voltage set to 1.36, but both processors would encounter errors very quickly so I upped it. Real Temp puts my average distance to TJ Max during full load at ~25 with my processor's core normally running at 72-75 celsius full load, 45-47 idle. Anyone have any input or suggestions as to why one of the cores would be grinding through Prime95 fine for 5-6 hours but the other encountering an error within the first hour?
By the way, the error encountered is: FATAL ERROR: Rounding was 0.5, expected less than 0.4. Hardware failure detected, consult stress.txt file.
Edit: Lucius's response was to a question I asked earlier, but the main post has been updated to reflect my current issue.
Edit 2: I use Windows 7 64-bit, by the way (in case the software isn't compatible or something).
Sounds like your overclock isn't quite there yet. If you have no more room to add more voltage try bring the clock speed down a little at a time to see if the errors subside. And again i suggest you to run the Small FFT torture test as it'll only stress the processor. This will help eliminate RAM from the equation. A small bump in voltage on the fsb couldn't hurt either.
as for temps if there off then dont worry about it tbh there not very accurate i have one set at 37c and one at 30c but they are actually well below 0. they are only accurate at higher temps to save from frying the cpu from heat
Bumping this because I'm having a similar problem with my e8400 and upon further inspection i found with speedfan that even though I have my vtt bumped to 1.30, core 1 is at 1.28 and core 2 at 1.30. core 1 is the one that keeps failing at around 3 hours in prime95 with core2 running stable.