help overclocking p4 1.8a?

[will11209]

hi everyone.

can anyone give me advice on how to overclock my pentium 4 1.8a? i dont have any additional cooling except for my cpu fan which came with the CPU chip. can i push my performance a little more -- without damaging my CPU?

i have an asus p4s333-m motherboard.

thanks very much for your help

 

[quarkmachine]

It just so happens i went with a 1.8a and a P4S333 a couple of weeks ago... it's running at 2.1 right now with stock cooling... I'm not going to go look now but I'm pretty sure the FSB is at 118. So far my PCI cards are handling the higher frequency... havn't experienced any lockups or slowdowns... and the temp only averages about 4-5 degress higher, compared to past experience it was very easy with this setup. Good luck!

"Takeoffs are optional, landings are mandatory."

 

[Guest]

you should have bought the northwood version. the willamette are allready reaching its limits at 2000ghz. i have had my pentium 4 northwood 1,8ghz up in a stunning 2520mhz thats 140fsbx18. and should also bought a motherboard with rimm (rdram) memory. right now i am running at 2394mhz (133fsbx18), it got a little unstable at 2,5ghz... i have reached this with my swiftech MCX478B with Papst 8412NGH.

INTEL PENTIUM 4 1800MHZ@2394MHZ
Swiftech MCX478B - Papst 8412NGH
Abit TH7 II @ 133MHZ FSB

 

[Scout]

Uh... I think the 1.8a IS the Northwood!

Scout
700 Mflops in SETI!

 

[Scout]

Sure, go ahead and put your FSB up to 133 MHz. (533 quad pumped).. your SiS 645 motherboard supports that... and you'll be sitting at a nice 2.4 GHz. Plus, you won't have anything else in your rig overclocked because the board has the appropriate AGP and PCI dividers!

Watch your temps, you may have to get a better fan. But the nice part is the P4 will slow itself down automatically if it gets too hot. I have a 1.6a in this board and I run it at 2.2 with the stock heat sink, although I have a bigger fan installed.

Scout
700 Mflops in SETI!

 

[will11209]

hey pchardoc:

do i have the 'northwood' version of the cpu? it says:

1.80A ghz/400mhz system bus w/ 512-kb L2 advanced transfer cache.

supposing i do everything correctly and overclock my CPU to say 2.2ghz... is it like having a 2.2ghz machine?

btw, i have 256k of 2100 DDR memory made by Kingston.

 

[quarkmachine]

I've tried to get mine to 2.4 using the 133FSB so that everything else will stay in spec... even upped the voltage to 1.7. It just won't boot after I make the changes... mine is a 1.8a northwood.. don't understand why I can't pull it off when so many others can. It is running stably at 2127mhz now, but my FSB is at 118 and I'd prefer to keep that in spec and get the 2.4.. any suggestions?

"Takeoffs are optional, landings are mandatory."

 

[Scout]

Hummm... that is disappointing! I haven't read much about the Northwood chips coming out of the various fabs. Maybe some of us are just lucky to get the "right" ones... 2.4 GHz. may just be close enough to the upper limit of these chips that it's a 50/50 proposition of making it. At any rate, other than what you're doing by pushing the FSB, I don't have any other ideas you might try. Sorry!

Scout
700 Mflops in SETI!

 

[Crashman]

lol, what memory are you using? What ratio? If you're using DDR333, and the DDR333 setting, you can't overclock far because them memory won't do it. If you're using PC2100 at the DDR266 setting, same story. For PC2100, use the 1:1 setting. For DDR333, you can try 2/3 setting, but it will still be running them memory overclocked to DDR350.

What's the frequency, Kenneth?

 

[FatBurger]

Yes, the 1.8a with 512k of L2 is the Northwood.

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