AMD Radeon R5 M255 vs AMD Radeon R7 M340

Compare AMD Radeon R5 M255 4 GB vs AMD Radeon R7 M340 4 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

Benchmark Score
Other Benchmarks
Specifications
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Benchmark Score

Overall Score

General gaming and workstation score

204 points

213 points

4% slightly better overall score

Flux Core frame rate

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

5 FPS

0 FPS slightly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

3 FPS

Identical

3 FPS

City frame rate

Procedurally generated city scene with voxel rendering

4 FPS

0 FPS slightly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

1 FPS

Identical

1 FPS

Free GPU Benchmark

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Other Benchmarks

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

5013 points

5396 points

7% slightly higher Geekbench 5 (OpenCL) score

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

5527 points

5574 points

0.85% slightly higher Geekbench 5 (Vulkan) score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

4658 points

5183 points

11% slightly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

4925 points

6127 points

24% slightly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

925 MHz

49% significantly higher core clock speed

620 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

940 MHz

1021 MHz

8% slightly higher boost clock speed

Memory

Onboard memory size for textures and vertices

4 GiB

Identical

4 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

16 GB/s

Identical

16 GB/s

Pixel Rate

Number of pixels that can be rendered per second

7.52 Gigapixels/s

31% slightly higher pixel rate

5.72 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

22.56 Gigatexels/s

31% slightly higher texture rate

17.16 Gigatexels/s

Shading Units

Number of processors dedicated to shader processing

384

Identical

384

Texture Mapping Units

Number of processors dedicated to applying textures

Identical

Render Output Processors

Number of processors dedicated to final pixel rendering

Identical

Other details

Rank

Ranking in the hardwareDB database

427th of 586

422nd of 586

Family

The product line

Radeon R5 200 Series

Radeon R7 300 Series

Release date

The official date of release of this chip

2014 October

2015 December

Memory Type

The type of memory used by this chip

DDR3

DirectX Support

Maximum version of DirectX supported

11.2

12.0

OpenGL Support

Maximum version of OpenGL supported

4.3

4.6

Radeon R5 M255 vs Radeon R7 M340 specs and performance

In our benchmarks, the Radeon R7 M340 beats the Radeon R5 M255 in gaming performance.

Our database shows that the Radeon R5 M255 has a significantly 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 R7 M340 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, they both have the same amount of memory at 4 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.

In terms of raw gaming performance in our GPU benchmark, the Radeon R7 M340 is better than the Radeon R5 M255.