Unlocking P-II Slot 1 CPU... HELP!

[The Coolest]

Are those CPUs locked? If so how do I unlock 'em if its possible...

[Monaco]

Well, if it's locked, you are pretty much stuck with it. Can't unlock it if it isn't already. But, you are in luck, maybe- a good portion of Pentium 2 CPUs came unlocked from the factory. I believe it was the 333mhz chips and lower were sometimes unlocked. I've got a P2- 333mhz unlocked, very happy about that.

To see of yours is unlocked, just use the BIOS to change the multiplier. If it works, you have an unlocked chip. If it boots up back at the original speed, it's locked.

Good luck!

[TC]

I've got a P2 450 that's unlocked - I believe that was about the last speed grade that was not locked. There is no known way to unlock Intel chips.

[AdeRorthais]

What about the 'pencil trick' I heard of ? Does anyone know how to perform this on P///E Slot1 ?

[lennytiger]

The pencil trick connects the L1 bridges on Athlon/Duron chips that ups the voltage to 1.85.

There is no possible way of unlocking intel chips...

most intel chips throttle themselves when it gets too hot so you have to have good cooling to stop them from doing that when they are overclocked.

[Monaco]

The pencil trick also can do a lot more, it can lock or unock an AMD CPU, or set the mult or voltage to specific values. Us Intel users have to suffer with no way to adjust a multiplier, just the FSB:(.

The throttling you speak of only occurs under drasticly high temperatures, like if you OC by 500mhz and then take the heatsink off yer CPU while playing Quake 3. Some Intel chips OC as well as AMD chips. YOu should check out the video at www.Anandtech.com of them doing just that, it's pretty cool--

[moosedick]

http://www.arstechnica.com/cpu/1q99/clocklock-1.html

[Mr B]

Originally posted by lennytiger
most intel chips throttle themselves when it gets too hotor go past the rated speed so they don't oc much at all!!

Hmmm...news to me and my Celeron 600 @ 1053. :p

[lennytiger]

Sorry I messed the last post i'll edited it now, what I meant to say is that the Intel Chips have a very good thermal die on the chip that detects if the processor is too hot and slows it back so that the temparature drops down.

This doesn't matter if you have good cooling because it won't gain too much more heat so the thermal die won't slow the chip down.

[Monaco]

overheat throttling- Only the Pentium 4s do this. And only when they get really frickin hot! Like "heatsink fell off the chip" kind of hot. Celerons & P3s do not do this. It's a really great safety mechanism, and not something that will ever bother a competent Overclocker.

[markedmundb]

AFAIK, it's only Engineering samples (ES-coded chips) that are multiplier-unlocked from about 266 or 300.

Sorry, but the only way to OC a modern (pII-onwards) Intel CPU is to crank up the FSB.

[lennytiger]

the new p3s do this aswell check out toms hardware guide.