Need help overclocking my opteron 146

[buzzsaw13]

These are my specs:

Asus A8N-SLI Deluxe with newest BIOS
Opteron 146 CAB2E 0546 GPAW Stepping with IHS removed
2x1gb Corsair XMS PC3200
Seasonic S12 500W

I've got the processor to 275x10@1.345 volts (saw a thread on undervolting to keep the temps down) and windows won't boot if I raise the HTT anymore.

Ram is being ran at 2.5-4-4-8@2.7V with the ram divider at 166mhz. Pic

I need some help getting this chip to 2800mhz+ and I can't seem to find how.

Forgot to mention that sometimes when it doesnt boot to windows, it leaves a little black screen that says C.24 or some other number. Not quite sure what that means, but it could hint to whats wrong!

 

[Bobthelost]

You can't undervolt and overclock. You have to overvolt to get good overclocks. Upping the voltage means that the transistors in the chip change from 0 to 1 and 1 to 0 faster, which means you can run the CPU faster. Lowering the voltage reverses that process.

 

[buzzsaw13]

Originally posted by: Bobthelost
You can't undervolt and overclock. You have to overvolt to get good overclocks. Upping the voltage means that the transistors in the chip change from 0 to 1 and 1 to 0 faster, which means you can run the CPU faster. Lowering the voltage reverses that process.

http://forums.anandtech.com/messageview...atid=28&threadid=1753083&enterthread=y

I got the idea of undervolting there, I lowered the overclock to 2700mhz because I can't run 3dmark and it is currently running nice and stable at a very low temperature.

 

[Fallengod]

Well youll need more voltage at some point. Its obviously the thing holding you back.

 

[buzzsaw13]

Originally posted by: modempower
Well youll need more voltage at some point. Its obviously the thing holding you back.

I've tried giving it 1.5V and still can't boot up windows with 2.8ghz

 

[JustStarting]

your OK to 1.6v if you have good cooling

Personally, 1.56- 1.57v is max for me for 24/7 use.

 

[buzzsaw13]

Originally posted by: JustStarting
your OK to 1.6v if you have good cooling

Personally, 1.56- 1.57v is max for me for 24/7 use.

I've got a zalman 7000-cu and decent airflow in my case and not sure if the mobo will allow 1.6V

I'll see if raising the voltage higher than 1.5V will yield any results.