AGP video card - 30-40W
PCI video card - 30W
AMD Athlon 900MHz-1.1GHz - 50W
AMD Athlon 1.2MHz-1.4GHz - 55-65W
AMD Duron 1.0MHz-1.3GHz - 50W
AMD Athlon 1.47MHz-1.73GHz - 75W
Intel Pentium III 800MHz-1.26GHz - 40W
Intel Pentium 4 1.4GHz-1.7GHz - 65W
Intel Pentium 4 1.8GHz-2.0GHz - 75W
Intel Pentium 4 2.2GHz-2.4GHz - 90W
Intel Celeron 1.0GHz-1.1GHz - 35W
Intel Celeron 1.2GHz-1.4GHz - 50W
ATX Motherboard - 35W-45W
128MB RAM - 10W
256MB RAM - 20W
24X or higher IDE CD-RW Drive - 35W
32X or higher IDE CD-ROM Drive - 25W
10x or higher IDE DVD-ROM Drive - 20W
SCSI CD-RW Drive - 17W
SCSI CD-ROM Drive - 12W
5,400RPM IDE Hard Drive - 10W
7,200RPM IDE Hard Drive - 13W
7,200RPM SCSI Hard Drive - 24W
10,000RPM SCSI Hard Drive - 30W
15,000RPM SCSI Hard Drive - 45W
Floppy Drive - 5W
Network Card - 4W
Modem - 5W
Sound Card - 5W
SCSI Controller Card - 20W
Firewire/USB Controller Card - 10W
Case Fan - 3W
CPU Fan - 3W
Hope this helps