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Differences What are the advantages of each

Front view of Radeon HD 8770M

Reasons to consider the
AMD Radeon HD 8770M

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Higher effective memory clock speed 4,500 MHz vs 2,002 MHz Around 2.2x higher effective memory clock speed
Higher memory bandwidth 72 GB/s vs 32 GB/s 2.2x higher memory bandwidth
Higher memory clock speed 1,125 MHz vs 1,001 MHz More than 10% higher memory clock speed
Front view of GeForce GTX 850M

Reasons to consider the
Nvidia GeForce GTX 850M

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Better 3DMark vantage graphics score 14,358.5 vs 7,078 More than 2x better 3DMark vantage graphics score
Better 3DMark06 score 4,385.5 vs 1,934 More than 2.2x better 3DMark06 score
Higher clock speed 902 MHz vs 775 MHz More than 15% higher clock speed
Better 3DMark 11 graphics score 16,135 vs 12,680 More than 25% better 3DMark 11 graphics score
Slightly better floating-point performance 1,154.6 GFLOPS vs 633.6 GFLOPS More than 80% better floating-point performance
Higher pixel rate 14.43 GPixel/s vs 6.6 GPixel/s Around 2.2x higher pixel rate
Slightly higher texture rate 36.1 GTexel/s vs 19.8 GTexel/s More than 80% higher texture rate
Higher turbo clock speed 936 MHz vs 825 MHz Around 15% higher turbo clock speed
More render output processors 16 vs 8 Twice as many render output processors
More shading units 640 vs 384 256 more shading units
More texture mapping units 40 vs 24 16 more texture mapping units

Benchmarks Real world tests of Radeon HD 8770M vs GeForce GTX 850M

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

3DMark Vantage Graphics Industry standard benchmark that tests DirectX 10 GPU performance

3DMark06 Industry standard benchmark that tests DirectX 9 GPU performance

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