NVIDIA GeForce GTX 680 vs AMD Radeon HD 7990

Compare NVIDIA GeForce GTX 680 4 GB vs AMD Radeon HD 7990 3 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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AMD Radeon HD 7990

Price

The cheapest price from our partner retailers

$ 519.99

$ 154.97 slightly less expensive

$ 674.96

Benchmark Score

Overall Score

General gaming and workstation score

1261 points

1743 points

38% slightly better overall score

Flux Core frame rate

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

28 FPS

41 FPS

12 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

17 FPS

25 FPS

8 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

19 FPS

35 FPS

16 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

14 FPS

0 FPS slightly higher Clouds frame rate

14 FPS

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Specifications

Core Clock Speed

Nominal chip frequency

1006 MHz

5% slightly higher core clock speed

950 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

1058 MHz

5% slightly higher boost clock speed

1000 MHz

Memory

Onboard memory size for textures and vertices

4 GiB

33% slightly 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

192.3 GB/s

288 GB/s

49% significantly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

195 W

92% significantly lower TDP

375 W

Pixel Rate

Number of pixels that can be rendered per second

33.86 Gigapixels/s

5% slightly higher pixel rate

32 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

135.4 Gigatexels/s

5% slightly higher texture rate

128 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

3.25 TFLOPS

4.10 TFLOPS

26% slightly better floating point performance

Shading Units

Number of processors dedicated to shader processing

1536

2048

33% slightly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

128

Identical

128

Render Output Processors

Number of processors dedicated to final pixel rendering

Identical

Other details

Rank

Ranking in the hardwareDB database

246th of 586

223rd of 586

Family

The product line

Radeon HD 7000 Series

Release date

The official date of release of this chip

2012 March

Memory Type

The type of memory used by this chip

GDDR5

DirectX Support

Maximum version of DirectX supported

11.0

11.2

OpenGL Support

Maximum version of OpenGL supported

4.5

4.4

GeForce GTX 680 vs Radeon HD 7990 comparison

According to the hardwareDB Benchmark, the Radeon HD 7990 GPU is faster than the GeForce GTX 680 in gaming.

Our database shows that the GeForce GTX 680 has a slightly 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 680 also has a slightly higher boost clock speed. This is a frequency that can be reached if the GPU is cooled sufficiently and has enough power.

Next up, in terms of GPU memory, the GeForce GTX 680 has slightly more memory with 4 GiB of memory compared to 3 GiB. If you're planning at playing games at high resolutions with high-quality textures, you will need a lot of memory.

In addition, the GeForce GTX 680 has a significantly lower TDP at 195 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 Radeon HD 7990 is better than the GeForce GTX 680.