Originally posted by: LukeMan
well the default voltage is 1.4v, and I run mine at 1.5v with 10x multiplier and 235mhz fsb to get me 2350mhz. Its completely stable playing counter-strike source. But when I get into those huge firefights I want an extra 5-10fps, so I'd like to overclock it just a little more.
I have an Abit AN8 motherboard. The Guru feature allows me to set the temperature warnings and at what temp to shutdown. I have it set to 60C for my cpu before it shuts down.
What timing should I change my memory to? I have 2 sticks of Corsair 1gb Value Select Memory, VS1GB400C3, with timings of 3-3-3-8. I would like to set my fsb to 275-280, with a 9x multiplier, giving me 2475-2520mhz, which is what I want. So you suggest a vcore of 2.7v?
no, set Vcore to at least 1.55v-1.60v. set VRAM to highest value. bump chipset voltage up to 1.65v or so and make darn sure CPU Spread Spectrum is disabled
Winchesters need AT LEAST 1.55v to get near their top end, you aren't going to find very many that will run >2.3ghz with anything less than that and many require more like 1.60v+ to get above 2.4ghz.
with heatspreaders, just set VRAM to max setting, probably 2.85-2.9v or so.
you are much, much better off using tighter timings of ~2.5,3,3,7 1T and a divider to keep the RAM under 230mhz. A big part of the problem I can see already is that Corsair VS will NOT run stable at 3,3,3,8 over 250mhz. It will be a miracle if you can get that RAM stable anything outside of 2.5,3,3,6-2.5,4,3,8. use memtest86+ to see if your RAM is even stable at those speeds, I seriously doubt it. ValueSelect isn't very flexible RAM. You are not going to be able to run it 1:1 and get over 2.4ghz.
the AN8 will do almost 400FSB. Extra FSB=faster framerates. I would shoot for an 8x multi and somewhere near 300FSB when all is said and done, though for the time being, continue on with 9x multi until you find the CPUs top end.
i.e. you will get better performance with 300x8 than 267x9
for the time being, use 133mhz RAM divider and see how far you get