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Differences What are the advantages of each

Front view of Radeon HD 8950

Reasons to consider the
AMD Radeon HD 8950

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Better floating-point performance 4,147 GFLOPS vs 2,867.2 GFLOPS Around 45% better floating-point performance
Higher clock speed 900 MHz vs 800 MHz Around 15% higher clock speed
Higher texture rate 129.6 GTexel/s vs 89.6 GTexel/s Around 45% higher texture rate
Higher pixel rate 43.2 GPixel/s vs 25.6 GPixel/s Around 70% higher pixel rate
More render output processors 48 vs 32 16 more render output processors
More shading units 2,304 vs 1,792 512 more shading units
More texture mapping units 144 vs 112 32 more texture mapping units
More compute units 36 vs 28 8 more compute units
Front view of Radeon HD 7950

Reasons to consider the
AMD Radeon HD 7950

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Better PassMark score 4,764 vs 3,120 Around 55% better PassMark score
Better PassMark direct compute score 2,725 vs 1,741 More than 55% better PassMark direct compute score

Benchmarks Real world tests of Radeon HD 8950 vs 7950

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Bitcoin mining Data courtesy CompuBench

Radeon HD 8950
181.51 mHash/s
Radeon HD 7950
382.11 mHash/s

Face detection Data courtesy CompuBench

Radeon HD 8950
40.31 mPixels/s
Radeon HD 7950
77.81 mPixels/s

Ocean surface simulation Data courtesy CompuBench

Radeon HD 8950
795.33 frames/s
Radeon HD 7950
1,177.76 frames/s

Particle simulation Data courtesy CompuBench

Radeon HD 8950
321.98 mInteraction/s
Radeon HD 7950
514.33 mInteraction/s

T-Rex (Compubench 1.5) Data courtesy CompuBench

Radeon HD 8950
3.33 frames/s
Radeon HD 7950
7.98 frames/s

Video composition Data courtesy CompuBench

Radeon HD 8950
64.21 frames/s
Radeon HD 7950
69.44 frames/s

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

Comments

Showing 1 comment.
The HD 8000 series is actually already out - they're just OEM and rebranded 7000 series. The next retail GPUs are supposedly going to be the HD 9000 series, though I've heard they may have a different naming scheme and be "R9-XXX"
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