There's something strange going on with my ABIT KT7A v1.1.
Athlon XP-M, multiplier x12.5, and voltage default 1,35V, I can get this thing stable maybe just 133FSB (1666MHz). But, if I raise CPU voltage up to 1,5V then maybe 136FSB is stable. Raising northbridge (and memory) voltage to 3,4V or more makes things only worse. It's possible to run memtest whole day without errors, and maybe 3DMark but FarCry crashes after few minutes on memory error.
BUT, if I put in non-mobile but unlocked Barton and pin-mod the CPU to use 15x multiplier (and voltage of 1,65V) then I can get FSB up to 142MHz or even more. (same thing with this CPU with x12.5 multiplier, board is not stable)
Months of struggling and testing I have came to conclusion that the more CPU eats current, the better for getting this board stable.
And yes, all the caps are replaced and the situation is the same before and after.
System is:
-Abit KT7A v1.1
-3x 256MB Micron ECC SDRAM
-Radeon X800Pro AGP
-146GB WD Raptor on PCI-SATA-controller
-Gravis Ultrasound
-Audigy2
-ESS Solo-1
-3COM ethernet