Will newer PSUs work with an old PIII system?

[rs1089]

Ok, so I'm thinking about giving my friend my old PIII 500Mhz system. The mobo's pretty basic, its got integrated graphics..that's pretty much it lol. My friend's got a Pentium II and his dad won't let him buy new parts. So I'm thinking of getting his dad to buy a case, psu and pci video card for under $200 so that my friend could later buy a new mobo, etc when he's got enough cash. My question is, will a newer PSU, say a Seasonic S12-430 work with an older PIII board? I think I recall that you need a -5V rail, but I'm not sure about this. Any help would be appreciated.

 

[PhoenixOrion]

any PSU that has 20+4 power pins should be compatible with older motherboards.

 

[dBTelos]

It will work. Does the board have a AGP slot? If it does, their is no reason you shouldn't use it.

 

[GalvanizedYankee]

Many of the newer spec PSUs lack a -5V & -12V is soon to go.
ISA & older PCI sound cards need the -5, iirc.

http://www.formfactors.org/ fifth link down. Its all there.


...Galvanized

 

[rs1089]

Alright, thanks for the replies. I ran into a problem though. THe new PSU needs the old AUX connector, the one with 6 pins...and most good power supplies don't use it anymore. So, are there any good PSU's that still have an AUX connector, or is there an adapter for it available?