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Differences What are the advantages of each

Front view of Radeon HD 8670

Reasons to consider the
AMD Radeon HD 8670

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More memory 2,048 MB vs 1,024 MB 2x more memory
Front view of Radeon HD 7770

Reasons to consider the
AMD Radeon HD 7770

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Significantly better 3DMark06 score 19,307 vs 10,760 Around 80% better 3DMark06 score
Better 3DMark vantage graphics score 13,398 vs 10,190 More than 30% better 3DMark vantage graphics score
Slightly better floating-point performance 1,280 GFLOPS vs 806.4 GFLOPS Around 60% better floating-point performance
Better sky diver factor score 221.64 vs 165.96 Around 35% better sky diver factor score
Slightly higher pixel rate 16 GPixel/s vs 8.4 GPixel/s More than 90% higher pixel rate
Slightly higher texture rate 40 GTexel/s vs 25.2 GTexel/s Around 60% higher texture rate
More render output processors 16 vs 8 Twice as many render output processors
More shading units 640 vs 384 256 more shading units
More texture mapping units 40 vs 24 16 more texture mapping units
Slightly more compute units 10 vs 6 4 more compute units

Benchmarks Real world tests of Radeon HD 8670 vs 7770

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

3DMark Vantage Graphics Industry standard benchmark that tests DirectX 10 GPU performance

3DMark06 Industry standard benchmark that tests DirectX 9 GPU performance

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

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