2.0 P4 @533 ?

[Guest]

I have a Asus P4t533 MOBO and a P4 2.0 Northwood. Is it possible to run the bus a 533 instead of 400? Does the CPU multiplyer need unlocked? Is that possible? Am I stupid for not buying a 2.26Ghz P4?

 

[Crashman]

Well, you could have gotten the 1.8A and amost assuredly ran that at 2.4GHz using the "533" speed. Now the 2.0A, maybe it will do 2666 at "533", maybe it won't. No garuntees either way. I would try it, using 1.85v.

What's the frequency, Kenneth?

 

[girish]

You have a good mobo, so you have all the overclocking tools at your disposal. As crash said, you could have bought a slower 1.6A or 1.8A P4 so that it could reliably ru at 533 MHz FSB. Still, 2.0A GHz to run at 2.66 GHz is a pretty high expectation. You could reduce the memory ratio to 3/4 and try increasing the FSB in steps of 5 MHz (which will get your FSB increase raise by 20 MHz and correspondingly the core speed by 100 MHz which is pretty much achieviable. When you reach closer and closer to 133 MHz you might need to increase the core voltage a bit, increase it in steps and you will finally get to 133 MHz, maybe.

I agree with Crash that 2.66 GHz is way too high to expect in the first run, I would expect a 2.4 GHz (thats what you get with a 1.8A) @120 MHz (480 MHz) FSB is what you will get for sure. Beyond that is pure luck!

You have saved a lot by not buying a 2.26 GHz P4 because its FSB is already 533 MHz which may not be scaled by much, and you get still better or par performance even with a 2.0A @2.4A/120!

girish

Every point I make has 'n' perspectives!
Boy do I need a <i>disclaimer</i> for my every word?

 

[Guest]

Thanks, How can a 1.6 or 1.8 run faster than a 2.0 ?

 

[Guest]

Ok, Do mean that if I overclock until I get to 533 on the frontside bus I will end up with a CPU running at 2.66Ghz, and that is most likely too high for the CPU.
A 1.8 running at 2.4 is a rise of 600Mhz or 33% A 2.0 running at 2.66 is a rise of 660 mhz or 33%. What am I missing? I guess I need to learn more and play with My MOBO. Thanks for your help. Anyone know where to find PC1066 RDRAM?

 

[Crashman]

Basically, 2.4GHz is nearing the limit for early revision Northwood cores.

What's the frequency, Kenneth?

 

[chuck232]

The earlier NW were basically downbinned versions of the 2GHz or 2.2Ghz (I think). That way it is much easier to get them to o/c to around there, but getting it to 2.66 is pushing it.

My firewall tastes like burning. 😱