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Radeon HD 6950 2GB vs Radeon R9 380 2G

Intro

The Radeon HD 6950 2GB has a clock speed of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It is comprised of 1408 SPUs, 88 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon R9 380 2G, which has GPU clock speed of 970 MHz, and 2048 MB of GDDR5 RAM set to run at 1425 MHz through a 256-bit bus. It also is comprised of 1792 Stream Processors, 112 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G 190 Watts
Radeon HD 6950 2GB 200 Watts
Difference: 10 Watts (5%)

Memory Bandwidth

Theoretically, the Radeon R9 380 2G should perform a small bit faster than the Radeon HD 6950 2GB overall. (explain)

Radeon R9 380 2G 182400 MB/sec
Radeon HD 6950 2GB 160000 MB/sec
Difference: 22400 (14%)

Texel Rate

The Radeon R9 380 2G should be much (more or less 54%) faster with regards to texture filtering than the Radeon HD 6950 2GB. (explain)

Radeon R9 380 2G 108640 Mtexels/sec
Radeon HD 6950 2GB 70400 Mtexels/sec
Difference: 38240 (54%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 380 2G is the winner, by far. (explain)

Radeon R9 380 2G 31040 Mpixels/sec
Radeon HD 6950 2GB 25600 Mpixels/sec
Difference: 5440 (21%)

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 380 2G

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 380 2G
Manufacturer AMD AMD
Year December 2010 June 2015
Code Name Cayman Pro Antigua PRO
Memory 2048 MB 2048 MB
Core Speed 800 MHz 970 MHz
Memory Speed 5000 MHz 5700 MHz
Power (Max TDP) 200 watts 190 watts
Bandwidth 160000 MB/sec 182400 MB/sec
Texel Rate 70400 Mtexels/sec 108640 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 31040 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 ×16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video 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 Render Output Units by the the card's clock speed. 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6950 2GB

Amazon.com

Check prices at:

Radeon R9 380 2G

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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