stew2

I have an intel cpu (see my specs) so this may not be great for amd but this is what i would do.

As your rams rated for 800mhz id raise the fsb to as close to 400 as i could get i get with the multiplier for the cpu as low as it;ll go to get a ratio of 1:1. Ideally your looking for a fsb of 400 with a cpu multiplier of 8 but i dont know if thats possible with your setup.

My fsb is set to 500 so:

Cpu is 500x6=3000mhz
RAM= 500x2=1000mhz
ratio 1:1

Oh and i dont know what voltages amd take but my intel cpu is set to 1.2volts so your 1.5volts seems high.