yes it is. and its a pretty big power supply, like 800+

All 5 are

Its XP PRO
3-4 gigs of ram
ati 6970 2gb
and amd processor i forget which but newer

MY experience this far was this.

I turned on the pc,
It loaded, I put my gui miner folder from another pc onto it,
then, it wouldn't start gui miner,
I was looking for solutions when a box popped up saying "Ati control cannot continue as your gpu is not supported"
I'm like wtf, so i look for the ati driver thinking that maybe its related to my guiminer problem.
I uninstall the ati catalyst control center, then reinstall it
initially it seems ok, but guiminer still wasnt working
then i decided maybe i should check windows update
got a Microsoft 3.5 .net framework update, now gui miner came up

Yay! Or so i thought...
Immediately i got the ATI catalyst center saying this was an unsupported gpu again.
I'm like wtf, and its not showing up in the guiminers list of selectables.
I uninstall the center again
reboot and try to reinstall, this time, the install seems to never be completing, 20 mins go by and its on the same bar
I knew something was wrong, I shut it down, continued to uninstall it again
Then i went to install it again, went fine.
Loaded up gui miner, no ATI 6970 in the list

I nerd raged and shut it off.
I haven't even touched the other 4 yet.
I dont know what to do, ive read some other people had problems with thier drivers and 6970. Anyone else?

sounds like im not alone, but i dont know what to do.
http://forums.amd.com/game/messageview.cfm?catid=260&threadid=143925
http://www.gamespot.com/forums/topic/28564935/ati-radeon-hd-6970-driver-issues....help

Thats pretty much where i am right now