When we talk about the computer power consumption, what we mention most is the processor and graphics cards. But as a whole pc package, the operation system and the applications would also consume the power, in which 3D games play the major part.
In order to investigate the modern 3D games' power consumption, Germany games and hardware website PCGH.de specially recruite several of the most common games to do some comparison tests.
Test System configuration:
Processor: Intel Core 2 Duo E6600 3GHz
Motherboard: XFX nForce 680i LT
Memory: 2 GB DDR2-800
Graphics Card: GeForce 8800 GT
Operation System: Windows XP PRO SP2
Driver: ForceWare 169.25
Resolution: 1280 × 1024
Game Setting: 4 X FSAA, 16X AF
First take a look at the different power consumption when entering a game in the various stages.

When the computer's first started it cost about 130W, and then it rapidly increased to 170W after accessing the BIOS menu. It's increased to 197W during the process of entering the Windows XP but when entering the desktop interface it's declined to 165W, after that it's floating between 162W to 175W when doing some general operations. Finally when entering the game, the power consumption rapidly