GPUBoss Review Our evaluation of 555 vs 640

Gaming

Real world tests using the latest 3D games

BioShock Infinite, Crysis 3, Dead Space 3, Diablo III and 1 more

Benchmarks

Synthetic tests to measure overall performance

Passmark

Compute Performance

General computing tests executed on the GPU

Passmark Direct Compute

GPUBoss Score

Gaming, Benchmarks and Compute Performance

Winner
GeForce GTX 555 

GPUBoss recommends the GeForce GTX 555  based on its .

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VS

Differences What are the advantages of each

Front view of GeForce GTX 555

Reasons to consider the
Generic GeForce GTX 555

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Significantly higher effective memory clock speed 3,828 MHz vs 1,800 MHz Around 2.2x higher effective memory clock speed
Better passmark score 2,194 vs 1,288 More than 70% better passmark score
Higher memory bandwidth 91.9 GB/s vs 28.8 GB/s Around 3.2x higher memory bandwidth
More render output processors 24 vs 16 8 more render output processors
Wider memory bus 192 bit vs 128 bit 50% wider memory bus
Front view of GeForce GT 640

Reasons to consider the
Leadtek GeForce GT 640

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Higher clock speed 902 MHz vs 736 MHz Around 25% higher clock speed
Lower TDP 65W vs 150W 2.3x lower TDP

Benchmarks Real world tests of GeForce GTX 555 vs GT 640

Passmark Industry standard benchmark for overall graphics card performance

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

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