Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > Power Supply for Pentium 3 PC
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ozfordfreak   04-10-2009 at 08:57:12 AM

I have a Pentium 3 PC with a dead power supply. I was wondering if it would be o.k for me to use a different power supply in it to see if I could fire it up.

The only thing I've noticed thats different about the power supply I want to try and the power supply in the PC is that the one I want to try has the CPU power line, as the older one doesn't. Will this matter? Should I still just be able to plugin the power connection to the MOBO and have it work?

Any help will be greatly appreciated.

Thanks.

~ Bee

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leo2kp   04-10-2009 at 03:31:18 PM
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It should work as long as you don't use the aux power connectors.

------------------------------ "He is no fool who gives what he cannot keep to gain what he cannot lose" -- Jim Elliott
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ozfordfreak   04-10-2009 at 03:54:47 PM
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By aux connectors you mean power to the CD/DVD drive and HDD?

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JohnnyLucky   04-10-2009 at 04:36:31 PM
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Modern motherboards have two power connections. The large main connection has either 20 or 24 pins. The smaller connection has either 4 or 8 pins.

Do you mean you have a pc with a Pentium III cpu? I built a pc at least 10 years ago with a Pentium III 500Mhz cpu. Or was it a Pentium II? I am growing old disgracefully and I forget things. I can't remember if the motherboards back then had a second smaller power connection like modern boards do. I don't think they did. I wonder if that's what leo2kp meant?


Message edited by JohnnyLucky on 04-10-2009 at 04:37:26 PM
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ozfordfreak   04-11-2009 at 05:46:51 PM
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Its funny you say that.

I have two Pentium 3 PC's, one at 700MHz and one at 1GHz. The older 700MHz one has two power connectors, and the 1GHz one does not.

I want to use the power supply out of the 700MHz one in the 1GHz one.

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B-Unit   04-11-2009 at 05:49:02 PM
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Just plug in the 20 or 24 pin connector and you will be fine. It will still be ATX.

 

I used the same ATX power supply on a PII 450Mhz out of a Gateway and a SocketA AthlonXP2800 setup. Actually, I think that PSU made it into my Socket 754 machine as well.


Message edited by B-Unit on 04-11-2009 at 05:51:36 PM
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