AMD Radeon R9 280 vs AMD Radeon RX 640

Compare AMD Radeon R9 280 3 GB vs AMD Radeon RX 640 4 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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AMD Radeon RX 640

Price

The cheapest price from our partner retailers

$ 399.00

$ 199.99

$ 199.01 significantly less expensive

Benchmark Score

Overall Score

General gaming and workstation score

1280 points

130% significantly better overall score

556 points

Flux Core frame rate

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

30 FPS

17 FPS significantly higher Flux Core frame rate

14 FPS

Electron frame rate

Randomly generated noise sphere test

19 FPS

10 FPS significantly higher Electron frame rate

9 FPS

City frame rate

Procedurally generated city scene with voxel rendering

27 FPS

14 FPS significantly higher City frame rate

13 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

10 FPS

6 FPS significantly higher Clouds frame rate

4 FPS

Free GPU Benchmark

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Specifications

Core Clock Speed

Nominal chip frequency

827 MHz

1082 MHz

30% slightly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

933 MHz

1287 MHz

37% slightly higher boost clock speed

Memory

Onboard memory size for textures and vertices

3 GiB

4 GiB

33% slightly more memory

Memory Bus Width

Number of parallel lines to the memory chips

384 Bit

499% significantly larger memory bus width

64 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

240 GB/s

328% significantly higher memory bandwidth

56 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

250 W

50 W

400% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

29.86 Gigapixels/s

44% significantly higher pixel rate

20.6 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

104.5 Gigatexels/s

102% significantly higher texture rate

51.48 Gigatexels/s

Texture Mapping Units

Number of processors dedicated to applying textures

112

180% significantly more texture mapping units

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

244th of 586

318th of 586

Family

The product line

Radeon R9 200 Series

Radeon 600 Series

Memory Type

The type of memory used by this chip

GDDR5

DirectX Support

Maximum version of DirectX supported

12.0

OpenGL Support

Maximum version of OpenGL supported

4.5

4.6

Radeon R9 280 vs Radeon RX 640 specs and performance

For gaming, the Radeon R9 280 graphics card is better than the Radeon RX 640 in our tests.

Our database shows that the Radeon RX 640 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 640 also 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 640 has slightly more memory with 4 GiB of memory compared to 3 GiB. Lots of memory is good when playing at high resolutions or with many monitors.

In addition, the Radeon RX 640 has a significantly lower TDP at 50 W when compared to the Radeon R9 280 at 250 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 R9 280 over the Radeon RX 640.