ASUS P5W DH - Problems + Fixes Thread

[sesdave]

I can't get my FSB past 379 with SPD off or about 395 with SPD on. I've tried using memset in windows to change the timings, but that didn't work for me. Everything seems to be running perfectly at 379 FSB with 4-4-4-4 timings, 1.45V, and auto vMCH, but as soon as I up it to 380, I start getting Orthos rounding errors. My temps seem alright with TAT (idle from 20C-25C, max load from 40C-45C, depending on room temp). Increasing the voltage doesn't seem to help anything, though I haven't played with the MCH voltage much. I'm using BIOS 1901.

What is a safe voltage to have this chip always running at? I've seen people post voltages as high as 1.7V, which seems really high to me. Then again, I haven't read one post about someone actually frying this chip. Also, what MCH voltage should I be using? I can go up as high as 1.85V.

Nice temps - you living on a glacier? I run a lot higher on air. Most CPU on air seem to need about 1.5 or more (amount varies CPU to CPU) to reach 3.6. My oher seetings runnng @3.6GHz are FSB=1.3,MCH=1.65,ICH=1.2. I increase MCH (NB) to 1.65 to stabalise for anythig beween 380-420 as a rule. then 1.75v if going higher As per CPU seems to vary board to board some get higher with lower. I would loosen memory timings to 4,4,4,12 until you get the higher FSB sorted. Disable everything in the BIOS you dont recognise or arent using e.g virtulisastion etc.