AMD Radeon RX 470 vs AMD Radeon HD 7990

Compare AMD Radeon RX 470 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

$ 4438.00

$ 674.96

$ 3763.04 significantly less expensive

Benchmark Score

Overall Score

General gaming and workstation score

1827 points

4% slightly better overall score

1743 points

Flux Core frame rate

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

38 FPS

41 FPS

3 FPS slightly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

27 FPS

2 FPS slightly higher Electron frame rate

25 FPS

City frame rate

Procedurally generated city scene with voxel rendering

38 FPS

2 FPS slightly higher City frame rate

35 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

14 FPS

1 FPS slightly higher Clouds frame rate

14 FPS

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Specifications

Core Clock Speed

Nominal chip frequency

926 MHz

950 MHz

2% slightly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

1206 MHz

20% 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

211 GB/s

288 GB/s

36% slightly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

120 W

212% significantly lower TDP

375 W

Pixel Rate

Number of pixels that can be rendered per second

38.59 Gigapixels/s

20% slightly higher pixel rate

32 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

154.4 Gigatexels/s

20% slightly higher texture rate

128 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

4.94 TFLOPS

20% 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

219th of 586

223rd of 586

Family

The product line

Radeon RX 400 Series

Radeon HD 7000 Series

Release date

The official date of release of this chip

2016 August

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

4.5

4.4

Radeon RX 470 vs Radeon HD 7990 specs and performance

For gaming, the Radeon RX 470 graphics card is better than the Radeon HD 7990 in our tests.

The Radeon HD 7990 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. Despite this, the Radeon RX 470 has a slightly higher boost clock speed: the maximum frequency the chip can reach if power delivery and thermals allow.

Furthermore, the spec sheet for both these GPUs show that the Radeon RX 470 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 470 has a significantly lower TDP at 120 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 RX 470 is better than the Radeon HD 7990.