Around 1.30 - 1.45v is all you should need. Even with a quad and 2 x 2GB sticks, PL8 and around 430 - 475 FSB.Originally Posted by shoehorned
That said though, I thought I was rock stable, but i can't get crysis stable at 4GHz. It's intel burn test stable, 13 hours orthos stable, windows memtest stable, dual SPI32M stable, but it cant last more than 10 minutes in crysis in the heavy scenes, sometimes as little as 30 seconds, before crashing to desktop.
It's definitely not my video card causing the instability. I dropped the system to 3.8GHz (423 x 9) and used the ram at the same speed/timings/voltage as normal, and left the card at the usual speed and voltage, and it was totally stable for 2 hours of gaming.
Increasing the SB 1.1v to 1.2v helped a little, but didnt solve it, I've tried up to 1.3v to no avail, and SB 1.5v makes no diff no matter what I set. Increasing vNB to 1.45v (way overkill for my FSB/ram timings) and it made no difference. Ive tried CPU & NB clock skews between 100 and 300ps, and all ram skew combos to no avail. I've dropped AI Clock Twister to moderate in conjunction with raising vNB and it didn't help either. i tried PL10 (usually run PL8) and it made no difference.
It's actually more stable at 534 FSB and 7.5x MP than at 445 FSB and 9x MP. This is a really odd issue. I'll report back if I can get it sorted, and running a lower cpu speed/FSB is not an option for me, I'll change mobos before I do that. I have a few more things to experiment with, but I've pretty much exhausted all my options.
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