Are all Socket 478 CPU's electrically compatible?

Question

I have an old computer with a Celeron 1700 Socket 478 type CPU. I wanted to see if I could upgrade it to a Pentium4 3.0GHZ since they are soo cheap second hand these days. So I borrowed a friend's Pentium4 Socket 478 CPU, plugged it into my motherboard, and the computer didn't turn on. Nothing at all on the screen. Only the fans start when the computer is turned on. I took the P4 out put my old Celeron 1700 back in and everything works fine. Now doing some research on the web I realize there are many compatibility issues out there and not every motherboard will work with every CPU even when the CPU socket type is right. So my question is:

By plugging in a Pentium 4 3.0Ghz Presscott CPU into an older socket 478 motherboard that didn't support it, did I electrically damage anything ? In other words, my computer seems to work fine with the old CPU back in there but did I damage my good friend's P4?

Answer 1

Celeron 1.7G draws up to 63.5 watts. P4 3.0Ghz Prescott draws up to 89 watts. If your motherboard does not have a 4 pin 12V ATX power connector, it may have a problem powering the P4 Prescott.
OR your motherboard's BIOS is too outdated for a P4 Prescott.

Your friend's P4 was most likely not damaged. It is excessive heat that easily damages a processor.

Answer 2

Probably not. If your motherboard survived, the processor probably did also.