AMD Radeon RX 570 vs AMD Radeon HD 7990

Compare AMD Radeon RX 570 8 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

$ 213.30

$ 461.66 significantly less expensive

$ 674.96

Benchmark Score

Overall Score

General gaming and workstation score

1929 points

10% slightly better overall score

1743 points

Flux Core frame rate

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

40 FPS

41 FPS

1 FPS slightly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

28 FPS

3 FPS slightly higher Electron frame rate

25 FPS

City frame rate

Procedurally generated city scene with voxel rendering

40 FPS

5 FPS slightly higher City frame rate

35 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

15 FPS

2 FPS slightly higher Clouds frame rate

14 FPS

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Specifications

Core Clock Speed

Nominal chip frequency

1168 MHz

22% slightly higher core clock speed

950 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

1244 MHz

24% slightly 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

224 GB/s

288 GB/s

28% slightly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

150 W

150% significantly lower TDP

375 W

Pixel Rate

Number of pixels that can be rendered per second

39.81 Gigapixels/s

24% slightly higher pixel rate

32 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

159.2 Gigatexels/s

24% slightly higher texture rate

128 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

5.10 TFLOPS

24% slightly better floating point performance

4.10 TFLOPS

Shading Units

Number of processors dedicated to shader processing

2048

Identical

2048

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

214th of 586

223rd of 586

Family

The product line

Radeon RX 500 Series

Radeon HD 7000 Series

Release date

The official date of release of this chip

2017 April

Memory Type

The type of memory used by this chip

GDDR5

DirectX Support

Maximum version of DirectX supported

12.0

11.2

OpenGL Support

Maximum version of OpenGL supported

4.6

4.4

Radeon RX 570 vs Radeon HD 7990 comparison

For gaming, the Radeon RX 570 graphics card is better than the Radeon HD 7990 in our tests.

Our database shows that the Radeon RX 570 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 Radeon RX 570 also has a slightly higher boost clock speed: the maximum frequency the chip can reach if power delivery and thermals allow.

As stated by the manufacturer, the Radeon RX 570 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 Radeon RX 570 has a significantly lower TDP at 150 W when compared to the Radeon HD 7990 at 375 W. This is not a measure of performance, but rather the amount of heat generated by the chip when running at its highest speed.

In conclusion, all specs and GPU benchmarks considered, will recommend the Radeon RX 570 over the Radeon HD 7990.