GPUBoss Review Our evaluation of 6990 vs 770 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

7

Overall Score

Winner
Nvidia GeForce GTX 770 

GPUBoss recommends the Nvidia GeForce GTX 770  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 6990

Reasons to consider the
Diamond Radeon HD 6990

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Significantly higher memory bandwidth 320 GB/s vs 224 GB/s Around 45% higher memory bandwidth
Better floating-point performance 5,099.6 GFLOPS vs 3,213 GFLOPS Around 60% better floating-point performance
More memory 4,096 MB vs 2,048 MB 2x more memory
Many more shading units 3,072 vs 1,536 Twice as many shading units
Significantly more render output processors 64 vs 32 Twice as many render output processors
Higher pixel rate 53.12 GPixel/s vs 33.5 GPixel/s Around 60% higher pixel rate
Significantly more texture mapping units 192 vs 128 64 more texture mapping units
Much wider memory bus 512 bit vs 256 bit 2x wider memory bus
Higher texture rate 159.4 GTexel/s vs 134 GTexel/s Around 20% higher texture rate
Front view of GeForce GTX 770

Reasons to consider the
Nvidia GeForce GTX 770

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Significantly better PassMark score 6,099 vs 2,844 Around 2.2x better PassMark score
Significantly higher effective memory clock speed 7,012 MHz vs 5,000 MHz More than 40% higher effective memory clock speed
Higher clock speed 1,046 MHz vs 830 MHz More than 25% higher clock speed
Better 3DMark vantage graphics score 36,150 vs 27,760 More than 30% better 3DMark vantage graphics score
Significantly better ocean surface simulation score 1,631.29 frames/s vs 840.45 frames/s Around 95% better ocean surface simulation score
Significantly higher memory clock speed 1,753 MHz vs 1,250 MHz More than 40% higher memory clock speed
Significantly better PassMark direct compute score 3,083 vs 1,255 Around 2.5x better PassMark direct compute score
Better sky diver factor score 381.9 vs 340.31 More than 10% better sky diver factor score
Much lower TDP 230W vs 375W Around 40% lower TDP

Benchmarks Real world tests of Radeon HD 6990 vs GeForce GTX 770

Bitcoin mining Data courtesy CompuBench

Radeon HD 6990
265.3 mHash/s
GeForce GTX 770
112.94 mHash/s

Face detection Data courtesy CompuBench

Radeon HD 6990
17.28 mPixels/s
GeForce GTX 770
50.95 mPixels/s

Ocean surface simulation Data courtesy CompuBench

Radeon HD 6990
840.45 frames/s
GeForce GTX 770
1,631.29 frames/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 6990
3,356.28
GeForce GTX 770
3,357.38

Manhattan (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 6990
3,713.7
GeForce GTX 770
3,714.32

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

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