S20, need upgraded PSU to support GPU upgrade, recomendations?

Hello All,
I'm trying to track down a suitible PSU upgrade from the 625w AcBel, that was stock on my S20, to something in the 850w rangs (800 - 900). The 10-pin EPS (CPU power supply) on the MoBo is making finding anything aftermarket difficult. I see that the C20 has an 800w PSU. I'm trying to find out if it is compatible and if so the part #. The IBM Phone system has been a little les that productive so far.
Any product recomendation would be greatly appreciated (aftermarket or manufacturer spec).
Thanks for your time - NHC
BTW - The new GPU I'm trying to power is just a AMD 6970, it's crashing after about 45 min. of strenuous use. All drivers are updated, temps are good, and system checks all come up positive. Hence my hypothesis of being slihtly underpwered. The PSU calc. I ran came up with an estimated requirement of 560w so running the old 625 is cutting things a bit close.
Thanks again
Solved!
Go to Solution.

I can just about guarantee you that power is not your problem.  From what I can find, the 6790 requires 2 x 6pin power connectors.  These connectors supply ~75W each.  With 75W from the board (by spec), this card theoretically maxes out at 225W.  Based on the specs of the card, I would say the max power is actually well below that.
S20 can easily support a 225W card, along with another standard 75W card as well.  So power on this rail is plentiful, and is unlikely to be the cause of your problem....especially since I don't think your card is anywhere near 225W.
As Erik stated, drivers is where you want to focus.  Desktop/gaming cards aren't workstation class cards, are are well known to be more buggy/crash-prone (though ideally not as bad as what you're experiencing). 

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