Is there a Online guide to O'Cing the NEW P4c -- HELP!!!

thatsright

Diamond Member
May 1, 2001
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(Tomorrow I will be ordering a ABIT IC7 & P4c 2.4 & Kingston HyperX PC3500 512 X2 & Zalman 7000AlCu HSF Combo.)

My question is;

I've gone all over the web looking for UP TO DATE guides for overclocking a P4 CPU, and haven't had too much luck. Most of them are at best, 6 months old; some are even 1 or two years old. (I've seen a lot more Athlon O'C guides than for P4 CPU's.)

Basically does anyone know of any guides out there that show you how, step by step of how to O'C the NEW P4C variant of the Northwood Core. I haven't Overclocked in over 4 years, so things have changed dramatically, and I'd like to see something that shows:

'If you do this, you get Result A: Great. If you get Result B, not good, Try this or This.' Something like that would be nice

If anyone knows of a O'C guide that is used with the P4c AND a ABIT IC7 GREAT.

Thanks everyone
 

Egrimm

Golden Member
Jun 26, 2001
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You still oc P4(C)s like you have alqays done: raise the fsb and that's it.

Remember to lock pci and agp to 33/66 (spec) though, all newer mobos (including the one you ordered) can do this but where to set it varies from board to board and I haven't used that one myself so I cannot say where to do it.

As P4s are multilpier locked you cannot oc them other than by raising th fsb, thus the importance of the pci-lock (as pci and agp normally are divided from the fsb they go up when not locked and harddrives do not like too high pci plus pci-cards can be a limit with high pci).

Raise the fsb some Mhz, then stress it to see if it is stable, then raise it some more until the system gets unstable. Then you can raise the vcore which should make it accept a little more fsb but remember that a higher vcore than stock will wear out the cpu faster, 1.7v or less is considered safe though but above you will risk damaging the cpu fairly fast (exotic cooling can combat this but that's a different story).

The ram runs at a speed divided from the fsb like the pci, normal is 1:1. 800/200 - they run 200fsb quadpumped so it's actually 200Mhz fsb - will match ddr400 (also 200Mhz but double) for example. There is usually other dividers too though, 5:4 will let the ram run slower than the fsb (if you oc to 250Mhz fsb you can still keep the ran at 200 for example) and 3:2 (300:200, usefull if you get that far). Remember that the ram can (and quite surely will with a C-cpu) limit you oc so the dividers can help a lot, your ram can run 217Mhz (ddr433) stock but it can probably do more.

Hope this helps.
 

TenaciousT

Member
May 17, 2003
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Remember that the ram can (and quite surely will with a C-cpu) limit you oc so the dividers can help a lot, your ram can run 217Mhz (ddr433) stock but it can probably do more.

What about with a 2.4b? I imagine that I'd be limited more by the CPU then the ram with just a B right?

Also, what about overclocking related temperature? I've read some articles that say anything over 60C will start giving you computation problems and others that say 70C. What's the real "safe" zone?

Sorry, I'm a newblet and I don't really want to cook anything (yet).

 

Egrimm

Golden Member
Jun 26, 2001
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Originally posted by: TenaciousT
Remember that the ram can (and quite surely will with a C-cpu) limit you oc so the dividers can help a lot, your ram can run 217Mhz (ddr433) stock but it can probably do more.
What about with a 2.4b? I imagine that I'd be limited more by the CPU then the ram with just a B right? Also, what about overclocking related temperature? I've read some articles that say anything over 60C will start giving you computation problems and others that say 70C. What's the real "safe" zone? Sorry, I'm a newblet and I don't really want to cook anything (yet).

Yep, most Bs get to 170fsb or so (unless you get a bad chip) and that's well under 200Mhz or 233Mhz (ddr400 and ddr433). Might be able to run 4:5 (cpu 170 ram 213) with a B though.

Temps doesn't matter that much, you shouldn't get problems at 60c, 70 is too high as it indicates that either the hsf doesn't work well or the case is severly underventilated (which is bad for other components, especially hd's) but cpu should work fine. At 75C the cpu will clock-down in speed to lower the heat if I remember correctly. Most people tend to try and keep their cpu's under 50c but 60 or below you shouldn't worry. But keep the casetemps under 40c, your hd's will thank you.
 

Quackmaster

Member
Apr 19, 2003
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You might wanna check out the abxzone.com forums (formerly asusboards.com. They have been way ahead of everyone else I've seen on the web (from a community standpoint) when it comes to dealing with these new P4s and the Springdale/Canterwoods. Dig the link-

they are located here

These new mobos and 800MHz cpus are the most fun OCing I've ever had! That Athlon unlocked multiplier stuff was cool, but making those traces was NOT fun.