I've just been having exactly the same problem, everytime I go into 3dmark2001 nature it locks or the screen corrupts. The other DX7games actually pass fine, but this DX8 game fails. WOuld do 450FSB for all the other tests but had to role it off to 400FSB to get it to pass.
This is the first time I have ever had the FSB effect 2001 nature like this, normally it is only the video card memory or gpu speed/temp. If anything high FSb would blow up lobby game.
To fix it I have defaulted the BIOS and simply upped the memory voltage and the cpu voltage, no more. Can you try the same on your machine and see what happens?
This is a tricky board to zero in and it is all down to the 780i chipset and what it likes ( very little ) and what it does not like (an awful lot). The actual board is great though.
Regards
Andy
Regards
Andy
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