GPUBoss Review Our evaluation of 7770 vs 640 among Desktop GPUs


Battlefield 3, Battlefield 4, Bioshock Infinite and 21 more


T-Rex, Manhattan, Cloud Gate Factor, Sky Diver Factor and 1 more


Face Detection, Ocean Surface Simulation and 3 more

Performance per Watt

Battlefield 3, Battlefield 4, Bioshock Infinite and 32 more


Battlefield 3, Battlefield 4, Bioshock Infinite and 32 more

Noise and Power

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


Overall Score

AMD Radeon HD 7770 

GPUBoss recommends the AMD Radeon HD 7770  based on its benchmarks and compute performance.

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Differences What are the advantages of each

Front view of Radeon HD 7770

Reasons to consider the
AMD Radeon HD 7770

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Much higher effective memory clock speed 4,500 MHz vs 1,800 MHz 2.5x higher effective memory clock speed
Better PassMark score 2,194 vs 1,282 More than 70% better PassMark score
Higher memory bandwidth 72 GB/s vs 28.8 GB/s 2.5x higher memory bandwidth
Higher clock speed 1,000 MHz vs 902 MHz More than 10% higher clock speed
Better floating-point performance 1,280 GFLOPS vs 692.7 GFLOPS Around 85% better floating-point performance
Better sky diver factor score 221.64 vs 143.75 Around 55% better sky diver factor score
Higher pixel rate 16 GPixel/s vs 7.22 GPixel/s Around 2.2x higher pixel rate
Higher metro: last light framerate 55 vs 28 More than 95% higher metro: last light framerate
Higher memory clock speed 1,125 MHz vs 900 MHz 25% higher memory clock speed
More shading units 640 vs 384 256 more shading units
Better PassMark direct compute score 1,403 vs 684 More than 2x better PassMark direct compute score
Front view of GeForce GT 640

Reasons to consider the
Leadtek GeForce GT 640

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Better T-Rex score 0.79 frames/s vs -1 frames/s More than 175% better T-Rex score

Benchmarks Real world tests of Radeon HD 7770 vs GeForce GT 640

Bitcoin mining Data courtesy CompuBench

Radeon HD 7770
153.66 mHash/s
GeForce GT 640
20.86 mHash/s

Face detection Data courtesy CompuBench

Radeon HD 7770
32.42 mPixels/s
GeForce GT 640
11.31 mPixels/s

Ocean surface simulation Data courtesy CompuBench

Radeon HD 7770
596.07 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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