GPUBoss Review Our evaluation of 840M vs 800M 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

6.4

Overall Score

Winner
Nvidia GeForce 840M 

GPUBoss recommends the Nvidia GeForce 840M  based on its benchmarks.

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VS

Differences What are the advantages of each

Front view of GeForce 840M

Reasons to consider the
Nvidia GeForce 840M

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Much better T-Rex score 3,359.62 vs 1,601.66 More than 2x better T-Rex score
Significantly higher clock speed 1,029 MHz vs 738 MHz Around 40% higher clock speed
Better PassMark score 879 vs 573 Around 55% better PassMark score
Better floating-point performance 790.3 GFLOPS vs 141.7 GFLOPS More than 5.5x better floating-point performance
Slightly higher pixel rate 8.23 GPixel/s vs 1.48 GPixel/s More than 5.5x higher pixel rate
More shading units 384 vs 48 336 more shading units
Higher memory clock speed 1,001 MHz vs 900 MHz More than 10% higher memory clock speed
Front view of GeForce 800M

Reasons to consider the
Nvidia GeForce 800M

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Lower TDP 15W vs 33W 2.2x lower TDP

Benchmarks Real world tests of GeForce 840M vs 800M

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Bitcoin mining Data courtesy CompuBench

GeForce 840M
94.68 mHash/s
GeForce 800M
15.22 mHash/s

Face detection Data courtesy CompuBench

GeForce 840M
22.54 mPixels/s
GeForce 800M
4.91 mPixels/s

Ocean surface simulation Data courtesy CompuBench

GeForce 840M
159.36 frames/s
GeForce 800M
109.13 frames/s

Particle simulation Data courtesy CompuBench

GeForce 840M
184.99 mInteraction/s
GeForce 800M
31.67 mInteraction/s

Video composition Data courtesy CompuBench

GeForce 840M
21.01 frames/s
GeForce 800M
7.25 frames/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

GeForce 840M
3,359.62
GeForce 800M
1,601.66

Manhattan (GFXBench 3.0) Data courtesy CompuBench

GeForce 840M
3,715.08
GeForce 800M
1,123.28

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