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Radeon HD 6950 vs Radeon R9 285

Intro

The Radeon HD 6950 uses a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 memory is set to run at a frequency of 1250 MHz on this card. It features 1408 SPUs as well as 88 Texture Address Units and 32 ROPs.

Compare all that to the Radeon R9 285, which makes use of a 28 nm design. AMD has set the core speed at 918 MHz. The GDDR5 RAM works at a frequency of 1375 MHz on this particular model. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 285 8500 points
Radeon HD 6950 3240 points
Difference: 5260 (162%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the Radeon R9 285 should theoretically be a little bit superior to the Radeon HD 6950 in general. (explain)

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

Texel Rate

The Radeon R9 285 will be a lot (about 46%) better at AF than the Radeon HD 6950. (explain)

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

Pixel Rate

The Radeon R9 285 will be a bit (more or less 15%) more effective at full screen anti-aliasing than the Radeon HD 6950, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 285 29376 Mpixels/sec
Radeon HD 6950 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

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 Radeon R9 285
Manufacturer AMD AMD
Year December 2010 September 2014
Code Name Cayman Pro Tonga PRO
Memory 1024 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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better 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 that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6950

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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