Tom's Energy Efficiency Guide

Graphics Cards

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GPURadeon HD 3870GeForce 9600 GT
GPU frequency775 MHz650 MHz
Shader frequency775 MHz1625 MHz
Memory frequency1125 MHz900 MHz
Memory bus width256 bits256 bits
Type of memoryGDDR4GDDR3
Memory512 MB512 MB
Number of Pixels/Vertex Pipelines-80-16
Number of texturing units1632
Number of ROPs1616
Processing power496 GFlops208 GFlops
Memory bandwidth72 GB/s57.6 GB/s
Number of transistors666 million505 million
Process0.055µ0.065µ
Die surface area196 mm²225 mm²
Generation20072008
Shader model supported4.14

AMD/ATI Radeon HD3870

The Radeon HD3870 offers sufficient performance for games, while staying at acceptable power requirements levels.

Nvidia GeForce 9600 GT

Power Supply Unit

Silverstone ST50EF Plus (500 W)

This power supply isn’t capable of supporting multi-GPU setups, as the 500 W maximum power output won’t suffice. However, this is one of the most efficient models in the mainstream segment, and we’ve had good experiences with it. We also used this for the $500 Gaming PC 2007 Edition.