Probably 250 watt, so . . . http://support.acer.com/acerpanam/desktop/0000/Acer/AspireSA90/AspireSA90sp2.shtml
250 watt is the total power for the entire machine. if he puts in a 250wt gpu his sys wont boot.
i think this is what he wants to know
1 PCI Express x16 slot
1 PCI Express x1 slot
2 PCI v2.3 slots (5V)
kev1264, you need to give us feedback. with a 250wt psu you are severely limited in terms of GPUs. on the other hand if you are adding a wifi card 250wt is fine. WE NEED FEEDBACK.
Yeah ! It's the Ditch the Dutchy day or something. Fun.
But in your case i must say you're a bit right, the idiot comment was a bit to much i agree, had a bad day or something. Sorry for that.