Power question

[jon112981]

I have an old computer that was put together a while ago. It currently lacks a power supply. It's a PIII 500 MHz with a cd drive, a CD-RW drive, fairly old motherboard(hot661 I beleive), and a single fan in the back along with the cooling for the CPU. Is there any way to figure out how big of a power supply to stick in it? All of the ones I see now are rated for AMD processors or P4 ready. I blew a power supply in it some how and had no idea how big it was (label was worn off). Is there some method to calculate this for any machine?

[PresterJohn]

a good 250watter will do.

[Jeordiewhite]

http://www.jscustompcs.com/power_supply/
Presterjohn is right, 250w will do, but if you cant find an old 250w psu, then you might be able to find a 300w psu for cheap, both will work tho.

[Bovon]

Be sure it is an AT type supply..unless of course you know it to be ATX. That was about the time ATX type motherboards were beginning to show up.

I have bought brand new 250/300 watt Fortron AT supplies at eBay for $10 bucks...plus shipping

[Brainchild]

Ya might find a cheapo ATX PSU HERE.And yeas make sure it is an ATX mobo.Some of them even came with both connectors.

[Dax_Brandy]

i think a P3 mobo is already an ATX form factor.. because ,my previous p3 450Mhz/epox mobo is already ATX. and the PSU is only 235Watts.

[Bullion]

ummmm the AT form factor was replaced by the transition from socket 7 to slot1-370 so no there is no way the p3 was ever AT

[Omardeth]

ya it should be atx unless it is a freak of nature . even alot of the socket7 boards were atx .

[jon112981]

Awesome thanks a bunch guys. Thanks Joerdiewhite for the link.