AMD Radeon RX 640 vs NVIDIA Quadro K620

Compare AMD Radeon RX 640 4 GB vs NVIDIA Quadro K620 2 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

Benchmark Score
Other Benchmarks
Specifications
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NVIDIA Quadro K620

Price

The cheapest price from our partner retailers

$ 199.99

$ 70.99

$ 129.00 significantly less expensive

Benchmark Score

Overall Score

General gaming and workstation score

556 points

81% significantly better overall score

306 points

Flux Core frame rate

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

14 FPS

7 FPS significantly higher Flux Core frame rate

7 FPS

Electron frame rate

Randomly generated noise sphere test

9 FPS

4 FPS significantly higher Electron frame rate

5 FPS

City frame rate

Procedurally generated city scene with voxel rendering

13 FPS

9 FPS significantly higher City frame rate

4 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

4 FPS

Identical

4 FPS

Free GPU Benchmark

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Other Benchmarks

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

15883 points

131% significantly higher Geekbench 5 (OpenCL) score

6869 points

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

15859 points

141% significantly higher Geekbench 5 (Vulkan) score

6567 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

14348 points

114% significantly higher Geekbench 6 (OpenCL) score

6697 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

16397 points

179% significantly higher Geekbench 6 (Vulkan) score

5877 points

Specifications

Core Clock Speed

Nominal chip frequency

1082 MHz

8% slightly higher core clock speed

1000 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

1287 MHz

14% slightly higher boost clock speed

1124 MHz

Memory

Onboard memory size for textures and vertices

4 GiB

100% significantly more memory

2 GiB

Memory Bus Width

Number of parallel lines to the memory chips

64 Bit

128 Bit

100% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

56 GB/s

94% significantly higher memory bandwidth

28.8 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

50 W

45 W

11% slightly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

20.6 Gigapixels/s

14% slightly higher pixel rate

17.98 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

51.48 Gigatexels/s

90% significantly higher texture rate

26.98 Gigatexels/s

Texture Mapping Units

Number of processors dedicated to applying textures

66% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

Identical

Other details

Rank

Ranking in the hardwareDB database

318th of 586

375th of 586

Family

The product line

Radeon 600 Series

Release date

The official date of release of this chip

2014 July

Memory Type

The type of memory used by this chip

GDDR5

DDR3

DirectX Support

Maximum version of DirectX supported

12.0

11.0

OpenGL Support

Maximum version of OpenGL supported

4.6

4.5

Radeon RX 640 vs Quadro K620 specs and performance

For gaming, the Quadro K620 graphics card is better than the Radeon RX 640 in our tests.

In our comparison, 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 significantly more memory with 4 GiB of memory compared to 2 GiB. Lots of memory is good when playing at high resolutions or with many monitors.

In addition, the Quadro K620 has a slightly lower TDP at 45 W when compared to the Radeon RX 640 at 50 W. TDP (Thermal Design Power) measures total heat output from the chip.

According to the results of the hardwareDB benchmark utility, the Quadro K620 is faster than the Radeon RX 640.