GPUBoss Review Our evaluation of 6670 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

6.2

Overall Score

Winner
Leadtek GeForce GT 640 

GPUBoss recommends the Leadtek GeForce GT 640  based on its benchmarks, compute performance and noise and power.

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VS

Differences What are the advantages of each

Front view of Radeon HD 6670

Reasons to consider the
AMD Radeon HD 6670

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Significantly higher effective memory clock speed 4,000 MHz vs 1,800 MHz Around 2.2x higher effective memory clock speed
Higher memory bandwidth 64 GB/s vs 28.8 GB/s Around 2.2x higher memory bandwidth
Higher memory clock speed 1,000 MHz vs 900 MHz More than 10% higher memory clock speed
Front view of GeForce GT 640

Reasons to consider the
Leadtek GeForce GT 640

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Higher clock speed 902 MHz vs 800 MHz Around 15% higher clock speed
Better sky diver factor score 143.75 vs 88.99 More than 60% better sky diver factor score
More render output processors 16 vs 8 Twice as many render output processors

Benchmarks Real world tests of Radeon HD 6670 vs GeForce GT 640

Bitcoin mining Data courtesy CompuBench

Radeon HD 6670
38.55 mHash/s
GeForce GT 640
20.86 mHash/s

Face detection Data courtesy CompuBench

Radeon HD 6670
5.23 mPixels/s
GeForce GT 640
11.31 mPixels/s

Ocean surface simulation Data courtesy CompuBench

Radeon HD 6670
235.46 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

Metro: Last Light

Reviews Word on the street

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