NVIDIA GeForce GTX 1080 vs AMD Radeon HD 7990

Compare NVIDIA GeForce GTX 1080 8 GB vs AMD Radeon HD 7990 3 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

Benchmark Score
Specifications
Comments (0)
Popular Comparisons

GPU Comparison

Quickly search and compare graphics cards

AMD Radeon HD 7990

Price

The cheapest price from our partner retailers

$ 365.00

$ 309.96 significantly less expensive

$ 674.96

Benchmark Score

Overall Score

General gaming and workstation score

4905 points

181% significantly better overall score

1743 points

Flux Core frame rate

Volumetric ray casting test, a computationally expensive method of rendering high-quality scenes

94 FPS

53 FPS significantly higher Flux Core frame rate

41 FPS

Electron frame rate

Randomly generated noise sphere test

79 FPS

54 FPS significantly higher Electron frame rate

25 FPS

City frame rate

Procedurally generated city scene with voxel rendering

62 FPS

27 FPS significantly higher City frame rate

35 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

64 FPS

51 FPS significantly higher Clouds frame rate

14 FPS

Free GPU Benchmark

Want to compare your graphics card against the GeForce GTX 1080 and the Radeon HD 7990? Download our free and quick PC Performance Test.

Download GPU Benchmark

Specifications

Core Clock Speed

Nominal chip frequency

1607 MHz

69% significantly higher core clock speed

950 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

1733 MHz

73% significantly higher boost clock speed

1000 MHz

Memory

Onboard memory size for textures and vertices

8 GiB

166% significantly more memory

3 GiB

Memory Bus Width

Number of parallel lines to the memory chips

256 Bit

384 Bit

49% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

320.3 GB/s

11% slightly higher memory bandwidth

288 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

180 W

108% significantly lower TDP

375 W

Pixel Rate

Number of pixels that can be rendered per second

110.9 Gigapixels/s

246% significantly higher pixel rate

32 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

277.3 Gigatexels/s

116% significantly higher texture rate

128 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

8.87 TFLOPS

116% significantly better floating point performance

4.10 TFLOPS

Shading Units

Number of processors dedicated to shader processing

2560

25% slightly more shading units

2048

Texture Mapping Units

Number of processors dedicated to applying textures

160

25% slightly more texture mapping units

128

Render Output Processors

Number of processors dedicated to final pixel rendering

100% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

104th of 586

223rd of 586

Family

The product line

Radeon HD 7000 Series

Release date

The official date of release of this chip

2016 May

Memory Type

The type of memory used by this chip

GDDR5X

GDDR5

DirectX Support

Maximum version of DirectX supported

12.0

11.2

OpenGL Support

Maximum version of OpenGL supported

4.5

4.4

GeForce GTX 1080 vs Radeon HD 7990 benchmarks

For gaming, the GeForce GTX 1080 graphics card is better than the Radeon HD 7990 in our tests.

In our comparison, the GeForce GTX 1080 has a significantly higher core clock speed. The core clock speed (or base speed) is the frequency at which the GPU core runs. This metric makes sense when comparing GPUs of a similar architecture or generation. In addition, the GeForce GTX 1080 also has a significantly higher boost clock speed. The boost clock speed is the frequency that the GPU core can reach if the temperature is low enough. The allows for higher performance in certain scenarios.

As stated by the manufacturer, the GeForce GTX 1080 has significantly more memory with 8 GiB of memory compared to 3 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.

In addition, the GeForce GTX 1080 has a significantly lower TDP at 180 W when compared to the Radeon HD 7990 at 375 W. TDP (Thermal Design Power) measures total heat output from the chip.

In terms of raw gaming performance in our GPU benchmark, the GeForce GTX 1080 is better than the Radeon HD 7990.