DFI LanpartyUt nF4 Ultra-D 704-2bta
AMD Athlon 64 3700+ KABAE 0604MPMW
@11x274 1.525 Vcore on XP-90C
1gig(2x516mb)OCZ gold pc3200 (OCZ4001024ELDCGE-K)
XFX 7900GT 587MHz Core 1768MHz Mem
Hiper Type-R 580watt
Audigy 2 ZS W/Logitech X-530
Samsung SyncMaster 225BW
The 580W Hiper was never recommended for DFI mobos in North America,
as there are so many better (& cheaper) choices available.
The Hiper 580W can not do highend SLI, impossible!
However with just one 8800GTS (not a GTX), you "might" squeek by.
My recommendation is either the Corsair 520W/620W non-SLI or the PC P&C 750W Quad for SLI.
Good Luck,
Dave