BIOSTAR TFORCE 550 and Athlon 64 X2 3600+ Brisbane 1.9GHz OC!!!

[bzo]

No - I'm just now realizing clock skew might be exclusive to the 590 chipset. With ASUS boards it's usually called "AI clock skew". With my board it's found under the main DRAM timing controls, with 1T/2T, single/dual channel, etc.

The other thing you might try (again if available) is drive strength. Fire up Systool and see what your default drive strengths are (they're on the second AM2 timing screen) then go into the BIOS and increment them all up by 1 step.

I actually have an Asus 570 board (m2n-sli dlx), but it doesn't seem like the bios has a setting for skew. I played around with the drive strength, but it didn't seem to help much. I sent a PM to bachus_anonym who was able to get the board to a 400 HTT in his AM2 testing thread, hopefully he will have some insight.