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Differences What are the advantages of each

Front view of Radeon HD 7870M

Reasons to consider the
AMD Radeon HD 7870M

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Much better T-Rex score 3,359.38 vs 1,803.68 More than 85% better T-Rex score
Better PassMark score 1,477 vs 814 More than 80% better PassMark score
Higher clock speed 800 MHz vs 600 MHz Around 35% higher clock speed
Better 3DMark06 score 2,702 vs 1,061.5 More than 2.5x better 3DMark06 score
More memory 2,048 MB vs 1,024 MB 2x more memory
Slightly better floating-point performance 1,024 GFLOPS vs 576 GFLOPS Around 80% better floating-point performance
Higher texture rate 32 GTexel/s vs 14.4 GTexel/s Around 2.2x higher texture rate
Better sky diver factor score 193.41 vs 71.57 Around 2.8x better sky diver factor score
Better PassMark direct compute score 934 vs 360 More than 2.5x better PassMark direct compute score
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 7670M

Reasons to consider the
AMD Radeon HD 7670M

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Better 3DMark 11 graphics score 8,203 vs 2,702 More than 3x better 3DMark 11 graphics score
Lower TDP 20W vs 45W 2.2x lower TDP

Benchmarks Real world tests of Radeon HD 7870M vs 7670M

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

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

3DMark06 Industry standard benchmark that tests DirectX 9 GPU performance

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7870M
3,359.38
Radeon HD 7670M
1,803.68

Manhattan (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7870M
3,705.92
Radeon HD 7670M
1,737.63

Sky Diver Factor Data courtesy FutureMark

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

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