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Differences What are the advantages of each

Front view of Radeon HD 7770

Reasons to consider the
AMD Radeon HD 7770

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Significantly higher clock speed 1,000 MHz vs 800 MHz 25% higher clock speed
Better floating-point performance 1,280 GFLOPS vs 614.4 GFLOPS More than 2x better floating-point performance
Higher pixel rate 16 GPixel/s vs 6.4 GPixel/s Around 2.5x higher pixel rate
Higher texture rate 40 GTexel/s vs 19.2 GTexel/s More than 2x higher texture rate
More render output processors 16 vs 8 Twice as many render output processors
Better CLBenchmark raytrace score 105,396 vs 56,993 Around 85% better CLBenchmark raytrace score
Better passmark direct compute score 1,353 vs 793 More than 70% better passmark direct compute score
Front view of Radeon HD 7730

Reasons to consider the
AMD Radeon HD 7730

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Lower TDP 47W vs 80W More than 40% lower TDP

Benchmarks Real world tests of Radeon HD 7770 vs 7730

Passmark Direct Compute Measures performance of general-purpose computing using Microsoft DirectCompute

CLBenchmark Raytrace Measures compute performance using OpenCL to do raytracing

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