This card runs at the stock 742MHz on the GPU, and a nice 2000MHz for the memory.  X-bit Labs picked up a pair for a big SLI versus CrossFire showdown, with both DX9 and DX10 being tested.  The testing reveals some interesting performance characteristics, as well as highlighting serious differences in the way games use nVIDIA versus ATI and dual graphics setups.  The oddest benchmark would have to be Neverwinter Nights 2, where the Radeon performs better at 2560×1600 than it does at 1920×1200.
“We have last discussed the performance of multi-processor graphics solutions in the era of previous generation GPUs, such as Radeon X1000 and GeForce 7. Today we are going to return to this topic and cover it on a completely new level with the unique Diamond Multimedia graphics card: ATI Radeon HD 2900 XT.”

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