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Differences What are the advantages of each

Front view of Radeon HD 7850

Reasons to consider the
AMD Radeon HD 7850

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Much better 3DMark06 score 20,570 vs 2,110 Around 9.8x better 3DMark06 score
Much better CLBenchmark raytrace score 190,967 vs 61,804 More than 3x better CLBenchmark raytrace score
Higher memory bandwidth 153.6 GB/s vs 64 GB/s Around 2.5x higher memory bandwidth
Higher clock speed 860 MHz vs 675 MHz More than 25% higher clock speed
Better 3DMark 11 graphics score 6,510 vs 2,110 More than 3x better 3DMark 11 graphics score
More memory 2,048 MB vs 1,024 MB 2x more memory
Better floating-point performance 1,761.3 GFLOPS vs 691.2 GFLOPS More than 2.5x better floating-point performance
Higher effective memory clock speed 4,800 MHz vs 4,000 MHz 20% higher effective memory clock speed
Higher pixel rate 27.52 GPixel/s vs 10.8 GPixel/s More than 2.5x higher pixel rate
Higher texture rate 55 GTexel/s vs 21.6 GTexel/s More than 2.5x higher texture rate
More render output processors 32 vs 16 Twice as many render output processors
More shading units 1,024 vs 512 Twice as many shading units
More texture mapping units 64 vs 32 Twice as many texture mapping units
More compute units 16 vs 8 Twice as many compute units
Higher memory clock speed 1,200 MHz vs 1,000 MHz 20% higher memory clock speed
Front view of Radeon HD 7770M

Reasons to consider the
AMD Radeon HD 7770M

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Significantly lower TDP 32W vs 130W 4.1x lower TDP

Benchmarks Real world tests of Radeon HD 7850 vs 7770M

3DMark 11 Graphics Industry standard benchmark that tests DirectX 11 GPU performance

3DMark06 Industry standard benchmark that tests DirectX 9 GPU performance

CLBenchmark Raytrace Measures compute performance using OpenCL to do raytracing

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