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Differences What are the advantages of each

Front view of Radeon HD 6650M

Reasons to consider the
AMD Radeon HD 6650M

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Wider memory bus 128 bit vs 64 bit 2x wider memory bus
Front view of GeForce 840M

Reasons to consider the
Nvidia GeForce 840M

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Much higher clock speed 1,029 MHz vs 600 MHz More than 70% higher clock speed
Much better T-Rex score 3,359.62 vs 3,334.19 Almost the same
Better 3DMark 11 graphics score 10,332 vs 7,307 More than 40% better 3DMark 11 graphics score
Better 3DMark vantage graphics score 6,627 vs 3,405.5 Around 95% better 3DMark vantage graphics score
Better 3DMark06 score 2,338 vs 1,037 More than 2.2x better 3DMark06 score
Higher memory clock speed 1,001 MHz vs 800 MHz More than 25% higher memory clock speed

Benchmarks Real world tests of Radeon HD 6650M vs GeForce 840M

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

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

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 6650M
GeForce 840M

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

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