GPUBoss Review Our evaluation of 680 vs 640 among Desktop 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

Value

Battlefield 3, Battlefield 4, Bioshock Infinite and 32 more

Noise and Power

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

6.3

Overall Score

Winner
Nvidia GeForce GTX 680 

GPUBoss recommends the Nvidia GeForce GTX 680  based on its benchmarks and compute performance.

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VS

Differences What are the advantages of each

Front view of GeForce GTX 680

Reasons to consider the
Nvidia GeForce GTX 680

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Much better PassMark score 5,693 vs 1,282 Around 4.5x better PassMark score
Much higher effective memory clock speed 6,008 MHz vs 1,800 MHz More than 3.2x higher effective memory clock speed
Much higher memory bandwidth 192.3 GB/s vs 28.8 GB/s Around 6.8x higher memory bandwidth
Significantly better floating-point performance 3,090.4 GFLOPS vs 692.7 GFLOPS Around 4.5x better floating-point performance
Significantly higher texture rate 128.8 GTexel/s vs 28.86 GTexel/s Around 4.5x higher texture rate
Much better sky diver factor score 381.6 vs 143.75 Around 2.8x better sky diver factor score
Many more texture mapping units 128 vs 32 96 more texture mapping units
Higher clock speed 1,006 MHz vs 902 MHz More than 10% higher clock speed
Higher pixel rate 32.2 GPixel/s vs 7.22 GPixel/s Around 4.5x higher pixel rate
Significantly more shading units 1,536 vs 384 1152 more shading units
More memory 2,048 MB vs 1,024 MB 2x more memory
Much higher memory clock speed 1,502 MHz vs 900 MHz More than 65% higher memory clock speed
Significantly better video composition score 72.95 frames/s vs 19.4 frames/s More than 3.8x better video composition score
More render output processors 32 vs 16 Twice as many render output processors
Significantly better PassMark direct compute score 2,928 vs 684 More than 4.2x better PassMark direct compute score
Wider memory bus 256 bit vs 128 bit 2x wider memory bus
Higher metro: last light framerate 49.8 vs 28 Around 80% higher metro: last light framerate
Front view of GeForce GT 640

Reasons to consider the
Leadtek GeForce GT 640

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Significantly lower TDP 65W vs 195W 3x lower TDP

Benchmarks Real world tests of GeForce GTX 680 vs GT 640

Bitcoin mining Data courtesy CompuBench

GeForce GTX 680
123.57 mHash/s
GeForce GT 640
20.86 mHash/s

Face detection Data courtesy CompuBench

GeForce GTX 680
47.72 mPixels/s
GeForce GT 640
11.31 mPixels/s

Ocean surface simulation Data courtesy CompuBench

GeForce GTX 680
1,504.98 frames/s
GeForce GT 640
209.1 frames/s

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Battlefield 4

Metro: Last Light

Reviews Word on the street

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