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Radeon R5 M255 vs Radeon R7 M260

Intro

The Radeon R5 M255 comes with a core clock speed of 940 MHz and a DDR3 memory frequency of 1000 MHz. It also makes use of a 64-bit bus, and uses a 28 nm design. It is made up of 320 SPUs, 20 TAUs, and 8 ROPs.

Compare those specifications to the Radeon R7 M260, which features GPU core speed of 715 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 64-bit bus. It also is made up of 384 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Both cards have exactly the same bandwidth, so in theory they should perform the same. (explain)

Texel Rate

The Radeon R5 M255 should be a little bit (more or less 10%) faster with regards to anisotropic filtering than the Radeon R7 M260. (explain)

Radeon R5 M255 18800 Mtexels/sec
Radeon R7 M260 17160 Mtexels/sec
Difference: 1640 (10%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R5 M255 is the winner, and very much so. (explain)

Radeon R5 M255 7520 Mpixels/sec
Radeon R7 M260 5720 Mpixels/sec
Difference: 1800 (31%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon R5 M255

Amazon.com

Check prices at:

Radeon R7 M260

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R5 M255 Radeon R7 M260
Manufacturer AMD AMD
Year June 2014 June 2014
Code Name Jet Pro Opal/Topaz
Memory 2048 MB 2048 MB
Core Speed 940 MHz 715 MHz
Memory Speed 2000 MHz 2000 MHz
Power (Max TDP) (Unknown) watts (Unknown) watts
Bandwidth 16000 MB/sec 16000 MB/sec
Texel Rate 18800 Mtexels/sec 17160 Mtexels/sec
Pixel Rate 7520 Mpixels/sec 5720 Mpixels/sec
Unified Shaders 320 384
Texture Mapping Units 20 24
Render Output Units 8 8
Bus Type DDR3 DDR3
Bus Width 64-bit 64-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x8 PCIe 3.0 x8
DirectX Version DirectX 11.2 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon R5 M255

Amazon.com

Check prices at:

Radeon R7 M260

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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