Athlon 64 X2 overclocking

[Link19]

I overclocked my Athlon 64 X2 3800 to 2.5GHz (250*10) I have 4*512MB DIMMs of PC4400 Corsair XMS RAM. So my RAM is easily fast enough to handle the overclock I did.

I have the VCORE set at 1.5V. When I run two instances of Prime95, they both pass perectly on the first round of Small FFTs from 8K to 32K. But on the second round when it reaches the 14K FFT stress test, one of the cores fails with a rounding error. This is the first time I tried overclocking my CPU to 2.5GHz and running dual instances of Prime95. The voltage for my RAM is set at 2.8V.

I have the X2 hotfix applied and the registry key set to 1. I also have the Athlon 64 X2 driver from AMD and have Cool and Quiet disabled.

The temperature readings from NV Monitor report 27C when the CPU is at idle and up to 49C when clocked at 2.5GHz 1.5 VCORE and running dual instances of Prime95.

It seems like I am very close, but just something is not quite perfectly stable. What should I try to make my system perfectly stable with my CPU overclocked to 2.5GHz?

 

[imported_michaelpatrick33]

Try more vcore. You can probably get stable at 1.52V. It is usually one core that runs into problems way before the other. For example, on my machine I have one core that can hit 2.85 but the other can only hit 2730 at 1.55V (X2 4400+) so 2730 is where I stay dual Prime95 stable, S&M stable etc.