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Differences What are the advantages of each

Front view of Radeon HD 6950

Reasons to consider the
Sapphire Radeon HD 6950

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Much higher effective memory clock speed 5,200 MHz vs 1,802 MHz Around 3x higher effective memory clock speed
Better PassMark score 3,192 vs 872 Around 3.8x better PassMark score
Higher memory bandwidth 166.4 GB/s vs 115.32 GB/s Around 45% higher memory bandwidth
Better floating-point performance 2,478 GFLOPS vs 1,056 GFLOPS More than 2.2x better floating-point performance
Much better cloud gate factor score 18.8 vs 10.96 More than 70% better cloud gate factor score
Higher texture rate 77.44 GTexel/s vs 26.4 GTexel/s Around 3x higher texture rate
More memory 2,048 MB vs 1,024 MB 2x more memory
Significantly more texture mapping units 88 vs 32 56 more texture mapping units
More shading units 1,408 vs 640 768 more shading units
More compute units 22 vs 8 14 more compute units
Significantly higher memory clock speed 1,300 MHz vs 901 MHz Around 45% higher memory clock speed
Front view of Radeon HD 3870 X2

Reasons to consider the
ATi Radeon HD 3870 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Much wider memory bus 512 bit vs 256 bit 2x wider memory bus
Lower TDP 165W vs 200W Around 20% lower TDP

Benchmarks Real world tests of Radeon HD 6950 vs 3870 X2

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 6950
3,358.26

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

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