GPUBoss Review Our evaluation of 7970 vs 7790 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

No winner declared

Too close to call

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VS

Differences What are the advantages of each

Front view of Radeon HD 7970

Reasons to consider the
AMD Radeon HD 7970

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Much higher memory bandwidth 264 GB/s vs 96 GB/s 2.8x higher memory bandwidth
More memory 3,072 MB vs 1,024 MB 3x more memory
Better floating-point performance 3,789 GFLOPS vs 1,792 GFLOPS More than 2x better floating-point performance
Higher texture rate 118.4 GTexel/s vs 56 GTexel/s More than 2x higher texture rate
Significantly more shading units 2,048 vs 896 1152 more shading units
Significantly more texture mapping units 128 vs 56 72 more texture mapping units
Significantly better T-Rex score 8.62 frames/s vs 3.65 frames/s More than 2.2x better T-Rex score
Much higher battlefield 3 framerate 100.5 fps vs 53.6 fps Around 90% higher battlefield 3 framerate
Better cloud gate factor score 21.22 vs 16.78 More than 25% better cloud gate factor score
Higher pixel rate 29.6 GPixel/s vs 16 GPixel/s More than 85% higher pixel rate
More compute units 32 vs 14 18 more compute units
More render output processors 32 vs 16 Twice as many render output processors
Wider memory bus 384 bit vs 128 bit 3x wider memory bus
Front view of Radeon HD 7790

Reasons to consider the
AMD Radeon HD 7790

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Higher clock speed 1,000 MHz vs 925 MHz Around 10% higher clock speed
Slightly higher effective memory clock speed 6,000 MHz vs 5,500 MHz Around 10% higher effective memory clock speed
Much lower TDP 85W vs 250W 2.9x lower TDP
Higher memory clock speed 1,500 MHz vs 1,375 MHz Around 10% higher memory clock speed

Benchmarks Real world tests of Radeon HD 7970 vs 7790

Bitcoin mining Data courtesy CompuBench

Radeon HD 7970
447.28 mHash/s
Radeon HD 7790
217.94 mHash/s

Face detection Data courtesy CompuBench

Radeon HD 7970
49.05 mPixels/s
Radeon HD 7790
40.43 mPixels/s

Ocean surface simulation Data courtesy CompuBench

Radeon HD 7970
261.64 frames/s
Radeon HD 7790
827.56 frames/s

Particle simulation Data courtesy CompuBench

Radeon HD 7970
52.96 mInteraction/s
Radeon HD 7790
334.12 mInteraction/s

T-Rex (Compubench 1.5) Data courtesy CompuBench

Radeon HD 7970
8.62 frames/s
Radeon HD 7790
3.65 frames/s

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

Radeon HD 7970  vs 7790 

8.8
9.3
The card features a custom-design dual-fan cooler and offers factory-overclocked speeds of 1075 MHz core and 6.40 GHz memory for a premium of just $10 over AMD's suggested reference design retail price of $149.
Radeon HD 7790

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