Changing the multiplier of a P3 coppermine?

[Reverend Maynard]

Howdy all. Thanks to a recent upgrade I have a 600 mhz coppermine sitting here as a paper-wieght. I was looking at it and got to thikning, is there any way to break, solder, melt, or manipulate this thing so that the multiplier is changeable? It's slot style btw, not socket. I just think it would be kind of neat to get that thing running at 1 ghz+. As is, it's stable at 850 with air cooling so I think there is some potential there. If it's possible I have no doubt at least one of you knows how. Thanks for your help.

[Kosh Naranek]

If it was possible it would have been all over the web ..... so I don't think it's possible without some serious modifications to the adapter and the motherboard.

[ayoub_ibrahim]

only the engineering samples have their multiplier unlocked!

[Technoid]

Has anyone botherd to check those funny resistors that sits on the "pin grid! side under the core on Coppermine P3's and Cellermine?

Thos resistors has different "settings" acording to multiplier!

Same speed has the resistors in the same configuration.

But i havent seen enough p3's to solve it and i dont have the resores to do any experimenting!

[cbman]

Hmmm... may be worth me pulling out my Cele to see Anyone else want to contibute...

First we have to establish a measurement standard though.

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Canadian... Hell Ya!!!

[Wombat]

I remember a guy about a year ago who unlocked his slot1 celeron. It involved using a drill press to bore out certain connections.

[Reverend Maynard]

That resistor idea is intriguing. I have a toasted 600 katami(sp?) I can take a look at and my bro has a 450 katami. Never know, maybe we find some way around the evil locked multiplier.

[Liquid Snake]

The main reason I would like to have a lower multiplier is so that I can push the FSB higher. Makes the CPU operate more efficiently. I don't have any dead CPUs to test this, but I think this could be very intereresting. Also, if anyone has an engineering sample, maybe it can compared to another CPU of the same speed, and see what the differences are?

[This message has been edited by Liquid Snake (edited 20 April 2001).]

[Technoid]

The sad thing is that nowdays I don't see that much of celerons or P3's.

It's mostly durons and Athlons and they arent rely locked

This Idea I have is of what i remenber limited to FCPGA cpus..

We could try to get one of super "hardware testers" like Tom or Annand interested in the Idea...

[Marshmallowman]

I heard that certain links on the die were fused throught at the factory to set the multiplier and that requires some rather hi tech solutions to defeat it(got acees to silican fab gear?) , for the normal p2 celeron chips anyway. I don't know what they do with FCPGA's

[rylan]

Yeah, from what I understand, *ntel blows some fuses on the die to internally lock the multiplier after the core goes through binning.
Soldering isn't gonna help you.

Back to my trusty pencil and AMD chips

[Reverend Maynard]

Well, I got an email from Mr. Andrawes over at Anandtech and here's what he had to say, "When Intel first started truly locking down their CPU's, we tried everything under the sun to unlock them, but it's simply not possible. It really is permanently locked." Well damnit all. Owell, thanks for the help all.