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Radeon HD 6950 2GB vs Radeon R9 295X2

Intro

The Radeon HD 6950 2GB makes use of a 40 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 memory runs at a frequency of 1250 MHz on this specific model. It features 1408 SPUs as well as 88 TAUs and 32 ROPs.

Compare all that to the Radeon R9 295X2, which has a clock speed of 1018 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 512-bit bus, and makes use of a 28 nm design. It is made up of 2816 SPUs, 176 Texture Address Units, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 2GB 200 Watts
Radeon R9 295X2 500 Watts
Difference: 300 Watts (150%)

Memory Bandwidth

As far as performance goes, the Radeon R9 295X2 should theoretically be a lot better than the Radeon HD 6950 2GB in general. (explain)

Radeon R9 295X2 640000 MB/sec
Radeon HD 6950 2GB 160000 MB/sec
Difference: 480000 (300%)

Texel Rate

The Radeon R9 295X2 is quite a bit (approximately 409%) better at anisotropic filtering than the Radeon HD 6950 2GB. (explain)

Radeon R9 295X2 358336 Mtexels/sec
Radeon HD 6950 2GB 70400 Mtexels/sec
Difference: 287936 (409%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 295X2 is a better choice, by far. (explain)

Radeon R9 295X2 130304 Mpixels/sec
Radeon HD 6950 2GB 25600 Mpixels/sec
Difference: 104704 (409%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon HD 6950 2GB

Amazon.com

Check prices at:

Radeon R9 295X2

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 295X2
Manufacturer AMD AMD
Year December 2010 April 2014
Code Name Cayman Pro Vesuvius
Memory 2048 MB 4096 MB (x2)
Core Speed 800 MHz 1018 MHz (x2)
Memory Speed 5000 MHz 5000 MHz (x2)
Power (Max TDP) 200 watts 500 watts
Bandwidth 160000 MB/sec 640000 MB/sec
Texel Rate 70400 Mtexels/sec 358336 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 130304 Mpixels/sec
Unified Shaders 1408 2816 (x2)
Texture Mapping Units 88 176 (x2)
Render Output Units 32 64 (x2)
Bus Type GDDR5 GDDR5
Bus Width 256-bit 512-bit (x2)
Fab Process 40 nm 28 nm
Transistors 2640 million 6200 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the 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 295X2

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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