please help with P4B266 and 1.8A oclock

[sulu17]

Hi,
I just got 1.8A and P4B266, but I am having problem oclocking. I can only get to 129 FSB with 1.725 V! I also get lock up when I reboot.

One thing I noticed in the Hardware monitor and MBM is that no matter what voltage I set above 1.65, the voltage stays at 1.65V. I have the board over-volted too. If jump the board for non-over-bolting then the voltage reads 1.5v no matter what CPU voltage I set.
Please help I think there is something wrong with my motherboard. I tried 2 different power supply. Please help!

 

[KenAF]

I agree... a 1.8A overclocked to 2322MHz does kind of suck.

The first thing to do on every Asus P4 board....is make sure you do not have anything plugged into the USB 1.1 ports when overclocking. On the P4B266, you should be sure and use the included USB 2.0 ports that will handle overclocking.

Also, are you using the 3/4 or the 1/1 memory divider? If you're using the 3/4 divider (multiply FSB by 1.33 to get memory speed), your memory would be running nearly 172MHz at 129FSB. That may be the max of your memory.

If you go past 133MHz FSB in the bios, the P4B266 automatically reverts to 1:1 memory divider in the current bios (to be fixed with more options added in an upcoming bios). Have you tried running at 133FSB?

And I take it you are using the bios for all FSB changes? If you use the switches on the board, you lose access to the bios voltage configuration, I believe.

 

[sulu17]

Thanks for the reply.

I don't have any USB port that's in use. Also RAM divisor is set at 1:1.

Does your board correctly report cpu voltage changes in the BIOS?

 

[XMan]

The first thing to do on every Asus P4 board....is make sure you do not have anything plugged into the USB 1.1 ports when overclocking. On the P4B266, you should be sure and use the included USB 2.0 ports that will handle overclocking.

I don't understand - at 133MHz, everything should be in spec, right? Does this rule still apply, then?

 

[JimmyJoe]

<< I don't understand - at 133MHz, everything should be in spec, right? Does this rule still apply, then? >>

Yes it does, see here.

At 133FSB everything SHOULD be at spec, but for some reason there are problems with some USB mice.

 

[XMan]

At 133FSB everything SHOULD be at spec, but for some reason there are problems with some USB mice.

Thanks for the link. Guess I will be using my PS/2 adapter on my Intellimouse Optical!!!

 

[JellyBaby]

Also don't forget you could simply be at the limit of that particular 1.8A. Not all chips are created equal and when overclocking there are no guarantees (unless you buy pre-tested parts).

 

[XMan]

(unless you buy pre-tested parts).


Yeah, but most of those places are no longer around!!!

 

[JellyBaby]

<< Yeah, but most of those places are no longer around!!! >>

True but here's one. P4 1.6A -> 2.2 GHz and possibly higher.