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Differences What are the advantages of each

Front view of Radeon HD 3870 X2

Reasons to consider the
ATi Radeon HD 3870 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Higher clock speed 825 MHz vs 600 MHz Around 40% higher clock speed
Higher memory bandwidth 115.32 GB/s vs 57.6 GB/s More than 2x higher memory bandwidth
Higher pixel rate 26.4 GPixel/s vs 9.6 GPixel/s Around 2.8x higher pixel rate
Better floating-point performance 1,056 GFLOPS vs 336 GFLOPS Around 3.2x better floating-point performance
Much wider memory bus 512 bit vs 256 bit 2x wider memory bus
More render output processors 32 vs 16 Twice as many render output processors
More shading units 640 vs 112 528 more shading units
Slightly better cloud gate factor score 10.96 vs 10.06 Around 10% better cloud gate factor score
Front view of GeForce GT 9800

Reasons to consider the
Nvidia GeForce GT 9800

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More texture mapping units 56 vs 32 24 more texture mapping units
Lower TDP 125W vs 165W Around 25% lower TDP

Benchmarks Real world tests of Radeon HD 3870 X2 vs GeForce GT 9800

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

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