GPUBoss Review Our evaluation of 340 vs 840M among all GPUs

Gaming

Battlefield 3, Battlefield 4, Bioshock Infinite and 21 more

Graphics

T-Rex, Manhattan, Cloud Gate Factor, Sky Diver Factor and 1 more

Computing

Face Detection, Ocean Surface Simulation and 3 more

Performance per Watt

Battlefield 3, Battlefield 4, Bioshock Infinite and 32 more

Noise and Power

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

6.9

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 GT 340

Reasons to consider the
Nvidia GeForce GT 340

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Slightly higher memory bandwidth 27.2 GB/s vs 16.02 GB/s Around 70% higher memory bandwidth
Slightly more texture mapping units 32 vs 16 Twice as many texture mapping units
Slightly 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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Significantly higher clock speed 1,029 MHz vs 550 MHz More than 85% higher clock speed
Slightly more shading units 384 vs 96 288 more shading units
Higher memory clock speed 1,001 MHz vs 850 MHz Around 20% higher memory clock speed
Lower TDP 33W vs 69W 2.1x lower TDP

Benchmarks Real world tests of GeForce GT 340 vs 840M

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Cloud Gate Factor Data courtesy FutureMark

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