CPU: Intel i7-965 Extreme Edition @ 3.2 GHz .............................................. 125 W
Motherboard: GIGABYTE GA-X58A-UD3R ........................................................ 38 W
Memory: CORSAIR XMS3 6GB (3 x 2GB) ........................................................... 9 W
GPU: HIS H587F1GDG Radeon HD 5870 ...................................................... 206.63 W Max (158.27 W Gaming)
Optical Drive: Sony Optiarc DVD Burner with LightScribe AD-7241S-0B ....... 37.5 W
Hard Disk Drive: Western Digital WD Black WD1001FALS 1TB 7200 RPM .... 10.2 W
SSD: Intel X25-M SSDSA2M080G2GC .............................................................. 2.5 W
CPU Cooler: Noctua NH-U12P SE2 (1.08 W x 2) ............................................. 2.16 W
Case Cooling Fans ....................................................................................... 13 W
Total DC Power Consumption.................................................................... 443.99 W (358.13 W gaming with no disc burning)
Power Supply: Corsair TX750 (SKU# 75-001309) @ 87% Eff. ................... 510.3 W max (411.64 W gaming with no disc burning)
Monitor: ASUS VH232H ................................................................................ 55 W
Total AC Power Consumption of System & Monitor: ............................... 565 W max. (466.64 W gaming)
UPS
CyberPower CP1350PFCLCD PFC Sinewave UPS System
Should give you at least 9 Minutes of estimated runtime on battery backup mode during a power interruption event.
http://www.newegg.com/Product/Product.aspx?Item=N82E16842102133