Radeon HD 2900 Pro Game Requirement Analysis
Radeon HD 2900 Pro is a high-end GPU based on the 80nm variant of the second unified shader architecture, R600.
It's based on the R600 Pro Core and offers 320 Shader Processing Units, 16 TMUs and 16 ROPs on a 256-bit memory interface of standard GDDR3. The central unit runs at 600MHz and the memory clock runs at up to 800MHz.
Its performance is quite superior to Radeon HD 2900 GT due to offering extra Shading Units. A GDDR4 version, paired with a 512-bit bus width and with a frame buffer of 1GB is also available should be significantly faster on high resolutions (thus better suited for today's modern games at 720p).
Today's games should run fluently at high settings using a 1024x768 resolution but beyond that, will require very reduced settings and DirectX 11 games aren't supported.