The HD 6950 Flex runs at the reference clock speeds of 800 MHz on the core and 1250 MHz on the memories. As it's the same Cypress core underneath, the overclocking hopes were high, and the card didn't let us down. The core got up to 900 MHz without any problems. Unfortunately there was barely any headroom left on the memories and they only clocked up to 1280 MHz.
- Processor: Intel i7 870 (@4022 MHz)
- Motherboard: MSI P55-GD80
- Memory: G.Skill Ripjaws 2*2 GB DDR3 2000 CL9
- Hard drive: Seagate 7200.10 250 GB
- Power supply: Xigmatek NRP-HC1201
- Case: Open air test bench
Starting the benchmarks with 3Dmark 11, with the results arranged according to the Extreme-preset the HD 6950 scores almost identically with the last generation HD 5870. In the Performance-preset it scores a good 7% better. Overclocking boosts the results by almost 10%.
3Dmark Vantage and again it's a close call with the HD 5870 being slightly faster at stock speeds. The GTX 560 Ti is again left behind, but the margin is just 549 points or 3%.
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