GPUBoss Review Our evaluation of 970 vs 640

Gaming

Real world tests using the latest 3D games

crysis: warhead (2013), Crysis: Warhead (2012), Batman: Arkham City and 6 more

Benchmarks

Synthetic tests to measure overall performance

Passmark

Compute Performance

General computing tests executed on the GPU

Passmark Direct Compute

Noise and Power

How loud and hot does the card run idle and under load

TDP

GPUBoss Score

Gaming, Benchmarks, Compute Performance and Noise and Power

Winner
Nvidia GeForce GTX 970 

GPUBoss recommends the Nvidia GeForce GTX 970  based on its .

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VS

Differences What are the advantages of each

Front view of GeForce GTX 970

Reasons to consider the
Nvidia GeForce GTX 970

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Much better passmark score 8,889 vs 1,287 Around 7x better passmark score
Much higher effective memory clock speed 7,012 MHz vs 1,800 MHz Around 4x higher effective memory clock speed
Significantly more memory 4,096 MB vs 1,024 MB 4x more memory
Higher clock speed 1,050 MHz vs 902 MHz More than 15% higher clock speed
Much higher pixel rate 67.2 GPixel/s vs 7.22 GPixel/s More than 9.2x higher pixel rate
Significantly better floating-point performance 3,494 GFLOPS vs 692.7 GFLOPS More than 5x better floating-point performance
Many more render output processors 64 vs 16 48 more render output processors
Much higher memory clock speed 1,753 MHz vs 900 MHz Around 95% higher memory clock speed
Much better passmark direct compute score 4,173 vs 680 Around 6.2x better passmark direct compute score
Significantly more shading units 1,664 vs 384 1280 more shading units
More texture mapping units 104 vs 32 72 more texture mapping units
Wider memory bus 256 bit vs 128 bit 2x wider memory bus
Front view of GeForce GT 640

Reasons to consider the
Leadtek GeForce GT 640

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Lower TDP 65W vs 148W 2.3x lower TDP

Benchmarks Real world tests of GeForce GTX 970 vs GT 640

Passmark Industry standard benchmark for overall graphics card performance

Passmark Direct Compute Measures performance of general-purpose computing using Microsoft DirectCompute

Reviews Word on the street

GeForce GTX 970  vs GT 640 

9.6
7.2
I find the EVGA's GTX 970 SC ACX quite noisy in both idle and load, other board partners are doing much better here, offering completely passive operation in idle, and a very quiet gaming experience.
GeForce GTX 970

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