GPUBoss Review Our evaluation of 660 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

6.7

Overall Score

Winner
Nvidia GeForce GTX 660 

GPUBoss recommends the Nvidia GeForce GTX 660  based on its benchmarks and compute performance.

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VS

Differences What are the advantages of each

Front view of GeForce GTX 660

Reasons to consider the
Nvidia GeForce GTX 660

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Much better 3DMark06 score 18,060 vs 2,338 Around 7.8x better 3DMark06 score
Significantly better PassMark score 4,121 vs 879 Around 4.8x better PassMark score
Significantly better 3DMark vantage graphics score 25,130 vs 6,627 More than 3.8x better 3DMark vantage graphics score
Significantly higher memory bandwidth 179.2 GB/s vs 16.02 GB/s Around 11.2x higher memory bandwidth
Significantly higher effective memory clock speed 5,600 MHz vs 2,002 MHz More than 2.8x higher effective memory clock speed
Much higher FarCry 3 framerate 80 vs 8.4 More than 9.5x higher FarCry 3 framerate
Higher texture rate 79 GTexel/s vs 16.46 GTexel/s More than 4.8x higher texture rate
Significantly better fire strike factor score 44.27 vs 12.59 More than 3.5x better fire strike factor score
Significantly more texture mapping units 96 vs 16 80 more texture mapping units
Better floating-point performance 1,896.2 GFLOPS vs 790.3 GFLOPS Around 2.5x better floating-point performance
Significantly more render output processors 32 vs 8 24 more render output processors
Slightly more memory 2,048 MB vs 1,024 MB 2x more memory
More shading units 1,152 vs 384 Three times as many shading units
Higher pixel rate 19.75 GPixel/s vs 8.23 GPixel/s Around 2.5x higher pixel rate
Higher memory clock speed 1,400 MHz vs 1,001 MHz Around 40% higher memory clock speed
Better PassMark direct compute score 1,948 vs 726 Around 2.8x better PassMark direct compute score
Wider memory bus 256 bit vs 64 bit 4x wider memory bus
Front view of GeForce 840M

Reasons to consider the
Nvidia GeForce 840M

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Higher clock speed 1,029 MHz vs 823 MHz More than 25% higher clock speed
Better 3DMark 11 graphics score 10,332 vs 6,850 More than 50% better 3DMark 11 graphics score
Higher turbo clock speed 1,124 MHz vs 888 MHz More than 25% higher turbo clock speed
Significantly lower TDP 33W vs 130W 3.9x lower TDP

Benchmarks Real world tests of GeForce GTX 660 vs 840M

Bitcoin mining Data courtesy CompuBench

GeForce GTX 660
62.66 mHash/s
GeForce 840M
94.68 mHash/s

Face detection Data courtesy CompuBench

GeForce GTX 660
31.08 mPixels/s
GeForce 840M
22.54 mPixels/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

GeForce GTX 660
3,354.98
GeForce 840M
3,358

Manhattan (GFXBench 3.0) Data courtesy CompuBench

GeForce GTX 660
3,714.32
GeForce 840M
3,561.59

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Bioshock Infinite

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