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Differences What are the advantages of each

Front view of Radeon HD 4870 X2

Reasons to consider the
ATi Radeon HD 4870 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Much wider memory bus 512 bit vs 256 bit 2x wider memory bus
Front view of GeForce GTX 770

Reasons to consider the
Nvidia GeForce GTX 770

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Much better PassMark score 6,099 vs 1,279 More than 4.8x better PassMark score
Much higher effective memory clock speed 7,012 MHz vs 3,600 MHz Around 95% higher effective memory clock speed
Significantly higher clock speed 1,046 MHz vs 700 MHz Around 50% higher clock speed
Significantly higher texture rate 134 GTexel/s vs 56 GTexel/s Around 2.5x higher texture rate
Better floating-point performance 3,213 GFLOPS vs 2,240 GFLOPS Around 45% better floating-point performance
Much higher memory clock speed 1,753 MHz vs 900 MHz Around 95% higher memory clock speed
More texture mapping units 128 vs 80 48 more texture mapping units
Higher pixel rate 33.5 GPixel/s vs 22.4 GPixel/s Around 50% higher pixel rate
Better cloud gate factor score 21.07 vs 18.34 Around 15% better cloud gate factor score
Lower TDP 230W vs 286W Around 20% lower TDP

Benchmarks Real world tests of Radeon HD 4870 X2 vs GeForce GTX 770

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

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