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Radeon HD 6950 2GB vs Radeon R9 285

Intro

The Radeon HD 6950 2GB comes with a GPU core clock speed of 800 MHz, and the 2048 MB of GDDR5 RAM runs at 1250 MHz through a 256-bit bus. It also features 1408 Stream Processors, 88 TAUs, and 32 Raster Operation Units.

Compare all of that to the Radeon R9 285, which features core clock speeds of 918 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285 190 Watts
Radeon HD 6950 2GB 200 Watts
Difference: 10 Watts (5%)

Memory Bandwidth

The Radeon R9 285 should in theory be a bit faster than the Radeon HD 6950 2GB overall. (explain)

Radeon R9 285 176000 MB/sec
Radeon HD 6950 2GB 160000 MB/sec
Difference: 16000 (10%)

Texel Rate

The Radeon R9 285 is much (more or less 46%) better at texture filtering than the Radeon HD 6950 2GB. (explain)

Radeon R9 285 102816 Mtexels/sec
Radeon HD 6950 2GB 70400 Mtexels/sec
Difference: 32416 (46%)

Pixel Rate

The Radeon R9 285 is a bit (about 15%) better at AA than the Radeon HD 6950 2GB, and also capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 285 29376 Mpixels/sec
Radeon HD 6950 2GB 25600 Mpixels/sec
Difference: 3776 (15%)

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 R9 285

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 R9 285
Manufacturer AMD AMD
Year December 2010 September 2014
Code Name Cayman Pro Tonga PRO
Memory 2048 MB 2048 MB
Core Speed 800 MHz 918 MHz
Memory Speed 5000 MHz 5500 MHz
Power (Max TDP) 200 watts 190 watts
Bandwidth 160000 MB/sec 176000 MB/sec
Texel Rate 70400 Mtexels/sec 102816 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 29376 Mpixels/sec
Unified Shaders 1408 1792
Texture Mapping Units 88 112
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 2640 million 5000 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.4

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video 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 the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably 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 R9 285

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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