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Differences What are the advantages of each

Front view of Radeon HD 6870M

Reasons to consider the
AMD Radeon HD 6870M

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Much better 3DMark06 score 14,396 vs 1,328 More than 10.8x better 3DMark06 score
Better 3DMark 11 graphics score 14,396 vs 10,056 Around 45% better 3DMark 11 graphics score
Slightly better floating-point performance 1,080 GFLOPS vs 696 GFLOPS More than 55% better floating-point performance
More shading units 800 vs 480 320 more shading units
More render output processors 16 vs 8 Twice as many render output processors
More texture mapping units 40 vs 24 16 more texture mapping units
More compute units 10 vs 6 4 more compute units
Higher memory clock speed 1,000 MHz vs 900 MHz More than 10% higher memory clock speed
Front view of Radeon HD 6770M

Reasons to consider the
AMD Radeon HD 6770M

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Slightly higher clock speed 725 MHz vs 675 MHz More than 5% higher clock speed

Benchmarks Real world tests of Radeon HD 6870M vs 6770M

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

3DMark06 Industry standard benchmark that tests DirectX 9 GPU performance

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