I'm using this PS (Ultra 500 Watt with 34A on the 12-volt rail) and should have my new PC assembled by next Sunday. I'll report back how this PS is performing.
My system will be fully loaded to include an Antec 1000AMG case; A64 3000+ retail (hopefully, OC'd to ~2.4); 2GBs (2 sticks in dual channel) of Patriot RAM (CAS 2 and hopefully with tight timings); a EVGA 7800GT with the EVGA SLI mobo (only 1 video card for now); 2 Optical Drives (newer models of Lite-On DVD-ROM and an NEC DVD-RW); 3 HDs (2 WD 160GBs in RAID and 1 other HD of as yet undecided size/brand); a Hauppaug WinTV-PVR 150 Tuner/Capture Card; an Audigy 2 ZS Platium sound card; 5 LED Case Fans (and a UV light which I still need to order) with a 4 fan controller; an internal 9-in-1 Card Reader, and a floppy drive.
In other words...my somewhat large case will be PACKED (i.e., NO empty bays) and this PS will be under full load. I will leave several of the aforementioned components "unconnected" (sound card, tv tuner/capture card, and DVD-RW) until I make sure the mobo, video card, PS and RAM are "working" BEFORE I tax the whole system by installing all the components.
I have to order 3 parts on Monday (i.e., my credit card cycle ends today

) to include: CPU (most likely will get the A64 3000+ with retail HSFl from Newegg for $146 shipped); the UV light (most likely from SVC.com); and a hard drive (most likely a ~100 GBer from WD or Maxtor).
IF this PS can handle the above system, I believe the PS should be able to handle 99% of the system out there. In case anyone is interested...just about EVERY component is RETAIL and the system cost me ~$1,275.00 (been buying components since late March 2005).
More later,
Bud