I'm in the process of building a computer (http://forums.offtopic.com/showthread.php?t=1898722) and I just checked my old psu to find that it's only rated for 300w. I know there's no way that will be sufficient for the system I'm building, so now I have to get a new psu. Unfortunately, I don't know anything about them. I was hoping that someone here could tell me what features and specs I need to look for in a good power supply besides wattage. It would need to support this system: MSI K8N Neo4 Platinum ATX AMD Motherboard - Retail - $138.50 from newegg AMD Athlon 64 3500+ Venice 1GHz FSB 512KB L2 Cache Socket 939 Processor - $267.00 from newegg Western Digital Caviar SE 250GB 3.5" Serial ATA150 Hard Drive - OEM - $118.99 from newegg CORSAIR XMS 2GB (2 x 1GB) 184-Pin DDR SDRAM Unbuffered DDR 400 (PC 3200) - $250.00 from newegg NEC Black IDE DVD Burner Model ND-3540A - OEM - $47.99 from newegg Logitech x-230 2.1 2-Piece Dual Drive Speakers with Ported Subwoofer - $37.64 from amazon Logitech Keyboard Elite Black - $29.99 from amazon Logitech 961361-0403 QUICKCAM IM WebCam - Retail x 2 - $79.88 from newegg ATI Radeon x800XL PCI-e - $299.99 from amazon I've been told that enermax and sparkle make good power supplies so I checked newegg and found these two (prices include shipping): ENERMAX EG565AX-VEFMA2.0-SLI 535W Power Supply - Retail - $120.98 ENERMAX Whisper II EG565P-VE FMA2.0 535W Power Supply - Retail - $95.98 The only difference I can see between those two is active PFC and, after reading a few articles on it, that doesn't seem worth the extra $25. Any help/advice/suggestions would be appreciated, thanks.