GPUBoss Review Our evaluation of 7670M vs 840M 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

6.2

Overall Score

Winner
Nvidia GeForce 840M 

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

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VS
Front view of GeForce 840M

Nvidia GeForce 840M

GPUBoss Winner

Differences What are the advantages of each

Front view of Radeon HD 7670M

Reasons to consider the
AMD Radeon HD 7670M

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Higher effective memory clock speed 3,600 MHz vs 2,002 MHz Around 80% higher effective memory clock speed
Higher memory bandwidth 57.6 GB/s vs 16.02 GB/s More than 3.5x higher memory bandwidth
More render output processors 16 vs 8 Twice as many render output processors
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 better T-Rex score 3,359.62 vs 1,803.68 More than 85% better T-Rex score
Much higher clock speed 1,029 MHz vs 600 MHz More than 70% higher clock speed
Better 3DMark06 score 2,338 vs 1,061.5 Around 2.2x better 3DMark06 score
Better 3DMark 11 graphics score 10,332 vs 8,203 More than 25% better 3DMark 11 graphics score
Better 3DMark vantage graphics score 6,627 vs 4,252.5 More than 55% better 3DMark vantage graphics score
Better particle simulation score 184.99 mInteraction/s vs 84.18 mInteraction/s Around 2.2x better particle simulation score
Better PassMark direct compute score 726 vs 360 More than 2x better PassMark direct compute score
Higher memory clock speed 1,001 MHz vs 900 MHz More than 10% higher memory clock speed

Benchmarks Real world tests of Radeon HD 7670M vs GeForce 840M

Face detection Data courtesy CompuBench

Radeon HD 7670M
2.47 mPixels/s
GeForce 840M
22.54 mPixels/s

Ocean surface simulation Data courtesy CompuBench

Radeon HD 7670M
210.9 frames/s
GeForce 840M
159.36 frames/s

Particle simulation Data courtesy CompuBench

Radeon HD 7670M
84.18 mInteraction/s
GeForce 840M
184.99 mInteraction/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7670M
1,803.68
GeForce 840M
3,359.62

Manhattan (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7670M
1,737.63
GeForce 840M
3,715.08

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

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