AMD Radeon RX 550 vs NVIDIA GeForce GTX 660

Compare AMD Radeon RX 550 4 GB vs NVIDIA GeForce GTX 660 3 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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Specifications
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Benchmark Score

Overall Score

General gaming and workstation score

621 points

816 points

31% slightly better overall score

Flux Core frame rate

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

15 FPS

18 FPS

3 FPS slightly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

14 FPS

2 FPS slightly higher Electron frame rate

11 FPS

City frame rate

Procedurally generated city scene with voxel rendering

16 FPS

4 FPS significantly higher City frame rate

13 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

10 FPS

0 FPS slightly higher Clouds frame rate

9 FPS

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

1190 points

1317 points

10% slightly higher 3DMark Graphics score

Geekbench 5 (Metal) score

Metal compute benchmark

18838 points

245% significantly higher Geekbench 5 (Metal) score

5449 points

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

14002 points

23% slightly higher Geekbench 5 (OpenCL) score

11381 points

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

15900 points

48% significantly higher Geekbench 5 (Vulkan) score

10693 points

Geekbench 6 (Metal) score

Metal compute benchmark

19855 points

360% significantly higher Geekbench 6 (Metal) score

4311 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

12342 points

8% slightly higher Geekbench 6 (OpenCL) score

11353 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

16237 points

36% slightly higher Geekbench 6 (Vulkan) score

11858 points

Specifications

Core Clock Speed

Nominal chip frequency

1100 MHz

12% slightly higher core clock speed

980 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

1183 MHz

14% slightly higher boost clock speed

1032 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

128 Bit

192 Bit

49% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

112 GB/s

144.2 GB/s

28% slightly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

50 W

180% significantly lower TDP

140 W

Pixel Rate

Number of pixels that can be rendered per second

18.93 Gigapixels/s

20.64 Gigapixels/s

9% slightly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

37.86 Gigatexels/s

82.56 Gigatexels/s

118% significantly higher texture rate

Shading Units

Number of processors dedicated to shader processing

512

960

87% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

150% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

49% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

305th of 586

276th of 586

Family

The product line

Radeon RX 500 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

11.0

OpenGL Support

Maximum version of OpenGL supported

4.5

Radeon RX 550 vs GeForce GTX 660 comparison

In our benchmarks, the Radeon RX 550 beats the GeForce GTX 660 in gaming performance.

Our database shows that the Radeon RX 550 has a slightly higher core clock speed. This is the frequency at which the graphics core is running at. While not necessarily an indicator of overall performance, this metric can be useful when comparing two GPUs based on the same architecture. In addition, the Radeon RX 550 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 550 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 550 has a significantly lower TDP at 50 W when compared to the GeForce GTX 660 at 140 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 terms of raw gaming performance in our GPU benchmark, the Radeon RX 550 is better than the GeForce GTX 660.