the VIA KT600 chipset does not support AGP/PCI
locking I knew that our overclocking adventure would not go too far (the Radeon
9700 Pro videocard doesn't work well at high AGP speeds). Still on with the
AMD AthlonXP 3200+ processor at 200 MHz FSB we began to
raise the bus speed slowly. Surprisingly the AK77-600 Max would boot all the way
up to 220 MHz FSB, but when we ran anything 3D intensive the board would crash back
to desktop. In order to keep the system stable, I had to lower the FSB to
210 MHz FSB. Anything higher and the 3D application tests would always
this isn't the best overclock in the world, it's not unexpected from the
KT600 chipset. Perhaps we were using a videocard which could handle the
higher FSB's we could have gone higher.
I enjoy tweaking VIA based motherboards
quite a bit as they offer so many options... The Aopen AK77-600 Max is no different,
just look at all those possible combinations! =)
AGP options for those of you who like to
change the AGP settings.
The Cypress W312-02H clock generator allows the
board to go up to a maximum of 248 MHz FSB. There is also full multiplier control
and we're able to set the memory to run faster or slower than the FSB. Maximum
CPU voltage goes to 1.85V. AGP is adjustable to 1.6V, and DDR to 2.8V.