How to OC an old celeron

[SneakyStuff]

I've got a machine jusy laying around with a 400 MHz, socket 370 celly, how high can I OC it to, and how would I go about doing it, thanks.

 

[myocardia]

Want to sell it? Oh, I mean, most of them will do at least 550, and I've seen higher.

 

[SneakyStuff]

ok, so this system is pretty much a piece of crap, how do i go about oc'ing it? it's got a fresh copy of windows 98 on it. It only has a PSU fan, and a processor fan on it, no rear fan, or no rear fan option for that matter, will that be a problem? there are slits in the side of it.

 

[sandorski]

Up the FSB, that's the only way.

 

[myocardia]

Actually, with the right board, you can just change the multiplier. Intel hadn't caught on yet at that point!

 

[sandorski]

Originally posted by: myocardia
Actually, with the right board, you can just change the multiplier. Intel hadn't caught on yet at that point!

Which mobo would that be? Never heard of such a thing.

 

[myocardia]

You've never heard of changing a multiplier? Quite a few years back, when after 16 or 18 years of trying, I finally got my dad to let me build him a computer, I built his e-mail machine with an Epox LX-chipset motherboard, and a 400mhz Celeron. Just for kicks, I decided so see what the Celly would do. It did 550, no problem, by raising the multi. This particular board, if I remember right, didn't even have fsb adjustment, just multi.

 

[slag]

you must have had an engineering sample.

Starting with the p2 300 I believe, all intel processors were multiplier locked.

It might have been as late as the 333 or 350.

 

[sandorski]

Originally posted by: myocardia
You've never heard of changing a multiplier? Quite a few years back, when after 16 or 18 years of trying, I finally got my dad to let me build him a computer, I built his e-mail machine with an Epox LX-chipset motherboard, and a 400mhz Celeron. Just for kicks, I decided so see what the Celly would do. It did 550, no problem, by raising the multi. This particular board, if I remember right, didn't even have fsb adjustment, just multi.

I know all about Multi changing, just not for P2s onwards. So was that just the LX chipsets that allowed it?

 

[ChunkyBarf]

My Celeron 366 is running at over 500Mhz. Your 400 will probably do nearly as well, your FSB will just not be as high (which may be a bad thing depending on how high your PCI and/or AGP buses will be running).

All Celeron are/were multiplier locked. Bear in mind the Celeron 300A (the miracle of overclocking) was locked and got to 450Mhz as a result of bumping the 4.5 x 66Mhz to 4.5 x 100Mhz.

 

[SneakyStuff]

I have NEVER oc'd a processor before, where do I do it? in the bios?

 

[SinfulWeeper]

Originally posted by: slag
you must have had an engineering sample.

Starting with the p2 300 I believe, all intel processors were multiplier locked.

It might have been as late as the 333 or 350.

True to an extent. All my PII 400's and 450's were locked to the max of 4.0 or 4.5 (based on speed of CPU obviously). However I was able to lower them all to 1 in .5 incriments. My first PII 400 OC'ed to 400

(3*133MHz) smoked it @ 4*100. Seeing a PII 66MHz on BIOS post was funny

None were ES's. Just pulls from new HP computers that I came across a really good deal on... and stripped them selling most of the parts to pay for the systems (made a bit of cash that way too :evil::evil::evil:)

Unfortunately I never came across a PIII or PIV that does that, although P4M's default to 12 on desktop boards.

 

[SneakyStuff]

Originally posted by: SneakyStuff
I have NEVER oc'd a processor before, where do I do it? in the bios?

so yea, about that?

 

[sandorski]

Originally posted by: SneakyStuff

Originally posted by: SneakyStuff
I have NEVER oc'd a processor before, where do I do it? in the bios?

so yea, about that?

Most likely using Mobo jumpers for your situation. Check your mobo manual(download it if you need to) for FSB(front side bus) settings adjustment and VCore adjustment.