GPUBoss Review Our evaluation of 640M vs 920M among Laptop GPUs under 35W TDP

Gaming

Battlefield 3, Battlefield 4, Bioshock Infinite and 21 more

Graphics

T-Rex, Manhattan and Cloud Gate Factor

Computing

Face Detection, Ocean Surface Simulation and 3 more

Performance per Watt

Battlefield 3, Battlefield 4, Bioshock Infinite and 30 more

Value

Battlefield 3, Battlefield 4, Bioshock Infinite and 30 more

Noise and Power

TDP, Idle Power Consumption, Load Power Consumption and 2 more

5.8

Overall Score

Winner
Nvidia GeForce GT 640M 

GPUBoss recommends the Nvidia GeForce GT 640M  based on its gaming and benchmarks.

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VS

Differences What are the advantages of each

Front view of GeForce GT 640M

Reasons to consider the
Nvidia GeForce GT 640M

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Slightly better PassMark score 932 vs 711 More than 30% better PassMark score
Much higher hitman: absolution framerate 7.45 vs 5.3 More than 40% higher hitman: absolution framerate
Wider memory bus 128 bit vs 64 bit 2x wider memory bus
Higher diablo III framerate 42.7 fps vs 36.65 fps More than 15% higher diablo III framerate
Front view of GeForce 920M

Reasons to consider the
Nvidia GeForce 920M

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Significantly higher clock speed 954 MHz vs 625 MHz Around 55% higher clock speed
Much better T-Rex score 3,358.92 vs 3,339.75 Almost the same
Better particle simulation score 161.39 mInteraction/s vs 97.1 mInteraction/s More than 65% better particle simulation score

Benchmarks Real world tests of GeForce GT 640M vs 920M

Bitcoin mining Data courtesy CompuBench

GeForce GT 640M
17.38 mHash/s
GeForce 920M
40.41 mHash/s

Face detection Data courtesy CompuBench

GeForce GT 640M
7.86 mPixels/s
GeForce 920M
8.36 mPixels/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

GeForce GT 640M
3,339.75
GeForce 920M
3,358.92

Manhattan (GFXBench 3.0) Data courtesy CompuBench

GeForce GT 640M
3,590.88
GeForce 920M
3,685.69

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Thief

Battlefield 4

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