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AMD Radeon HD 7770

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Front view of Radeon HD 7770

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 625 MHz 60% higher clock speed
Significantly higher effective memory clock speed 4,500 MHz vs 1,066 MHz Around 4.2x higher effective memory clock speed
Better PassMark score 2,194 vs 260 Around 8.5x better PassMark score
Higher memory bandwidth 72 GB/s vs 8.53 GB/s Around 8.5x higher memory bandwidth
Better floating-point performance 1,280 GFLOPS vs 200 GFLOPS Around 6.5x better floating-point performance
Higher pixel rate 16 GPixel/s vs 2.5 GPixel/s Around 6.5x higher pixel rate
Significantly higher memory clock speed 1,125 MHz vs 533 MHz More than 2x higher memory clock speed
Higher texture rate 40 GTexel/s vs 5 GTexel/s 8x higher texture rate
More render output processors 16 vs 4 12 more render output processors
More texture mapping units 40 vs 8 32 more texture mapping units
More shading units 640 vs 160 480 more shading units
Better PassMark direct compute score 1,403 vs 163 More than 8.5x better PassMark direct compute score
More compute units 10 vs 2 8 more compute units
Front view of Radeon HD 6450A

Reasons to consider the
AMD Radeon HD 6450A

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Lower TDP 25W vs 80W 3.2x lower TDP

Benchmarks Real world tests of Radeon HD 7770 vs 6450A

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

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

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