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Which P4 processor do I use

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Hi All,

I want to upgrade a couple of Toshiba A60 Laptops from Celeron to Pentium 4. I have established that the boards can take both and it is just a matter of changing the processor. They are the Socket 478 type.

Looking on ebay, I see that the original P4 A60's were fitted with a 3.06GHz Intel P4. BUT, I also have another A60 which says it has a P4 3.20GHz which seems to indicate that there are a number of P4 processors that could be used, and that this machine has been upgraded by someone.

eBay shows these as 478 p4 then a code that starts 'SL.....' there doesnt seem to betwo 'SL' codes the same. Is this CODE important to consider and what do the codes mean?

If I put in a bad spec 478 p4 processor, what would be the result? Would it fry the processor or the main board or just not work?

Thank you.
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