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AMD Radeon HD 7870

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Front view of Radeon HD 7870

Differences What are the advantages of each

Front view of Radeon HD 7870

Reasons to consider the
AMD Radeon HD 7870

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Higher clock speed 1,000 MHz vs 725 MHz Around 40% higher clock speed
Better PassMark score 4,339 vs 2,599 More than 65% better PassMark score
Better 3DMark06 score 23,230 vs 21,630 More than 5% better 3DMark06 score
Higher effective memory clock speed 4,800 MHz vs 4,000 MHz 20% higher effective memory clock speed
Better fire strike factor score 50.19 vs 33.32 More than 50% better fire strike factor score
Better PassMark direct compute score 2,360 vs 1,209 More than 95% better PassMark direct compute score
Higher memory clock speed 1,200 MHz vs 1,000 MHz 20% higher memory clock speed
Much lower TDP 175W vs 294W More than 40% lower TDP
Front view of Radeon HD 5970

Reasons to consider the
ATi Radeon HD 5970

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Significantly higher memory bandwidth 256 GB/s vs 153.6 GB/s More than 65% higher memory bandwidth
Better floating-point performance 4,640 GFLOPS vs 2,560 GFLOPS More than 80% better floating-point performance
Many more shading units 3,200 vs 1,280 1920 more shading units
Significantly more render output processors 64 vs 32 Twice as many render output processors
Significantly more texture mapping units 160 vs 80 Twice as many texture mapping units
Higher texture rate 116 GTexel/s vs 80 GTexel/s 45% higher texture rate
Higher pixel rate 46.4 GPixel/s vs 32 GPixel/s Around 45% higher pixel rate
More compute units 40 vs 20 Twice as many compute units
Wider memory bus 512 bit vs 256 bit 2x wider memory bus

Benchmarks Real world tests of Radeon HD 7870 vs 5970

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

3DMark Vantage (Texture Fill) Industry standard benchmark that tests DirectX performance

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

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7870
1,680.46
Radeon HD 5970
3,213.45

Manhattan (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7870
1,859.5
Radeon HD 5970
3,454.16

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

Radeon HD 7870  vs 5970 

8.8
9.3
If you want to build the fastest rig money can buy then a HD 5970 CrossFire setup is what you need.
Radeon HD 5970

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