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Radeon HD 6950 2GB vs Radeon R5 M255

Intro

The Radeon HD 6950 2GB makes use of a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM is set to run at a frequency of 1250 MHz on this specific card. It features 1408 SPUs along with 88 TAUs and 32 ROPs.

Compare that to the Radeon R5 M255, which has a GPU core clock speed of 940 MHz, and 2048 MB of DDR3 memory set to run at 1000 MHz through a 64-bit bus. It also features 320 Stream Processors, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 6950 2GB should theoretically be a lot superior to the Radeon R5 M255 overall. (explain)

Radeon HD 6950 2GB 160000 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 144000 (900%)

Texel Rate

The Radeon HD 6950 2GB should be a lot (approximately 274%) better at texture filtering than the Radeon R5 M255. (explain)

Radeon HD 6950 2GB 70400 Mtexels/sec
Radeon R5 M255 18800 Mtexels/sec
Difference: 51600 (274%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6950 2GB is superior to the Radeon R5 M255, by far. (explain)

Radeon HD 6950 2GB 25600 Mpixels/sec
Radeon R5 M255 7520 Mpixels/sec
Difference: 18080 (240%)

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 HD 6950 2GB

Amazon.com

Check prices at:

Radeon R5 M255

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.

Specifications

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Model Radeon HD 6950 2GB Radeon R5 M255
Manufacturer AMD AMD
Year December 2010 June 2014
Code Name Cayman Pro Jet Pro
Memory 2048 MB 2048 MB
Core Speed 800 MHz 940 MHz
Memory Speed 5000 MHz 2000 MHz
Power (Max TDP) 200 watts (Unknown) watts
Bandwidth 160000 MB/sec 16000 MB/sec
Texel Rate 70400 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 1408 320
Texture Mapping Units 88 20
Render Output Units 32 8
Bus Type GDDR5 DDR3
Bus Width 256-bit 64-bit
Fab Process 40 nm 28 nm
Transistors 2640 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x8
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 6950 2GB

Amazon.com

Check prices at:

Radeon R5 M255

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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