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Radeon HD 6950 2GB vs Radeon R9 380 4G

Intro

The Radeon HD 6950 2GB features a core clock speed of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 256-bit bus, and uses a 40 nm design. It is made up of 1408 SPUs, 88 Texture Address Units, and 32 ROPs.

Compare those specs to the Radeon R9 380 4G, which comes with core clock speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 4G 190 Watts
Radeon HD 6950 2GB 200 Watts
Difference: 10 Watts (5%)

Memory Bandwidth

Theoretically, the Radeon R9 380 4G should be a little bit faster than the Radeon HD 6950 2GB in general. (explain)

Radeon R9 380 4G 182400 MB/sec
Radeon HD 6950 2GB 160000 MB/sec
Difference: 22400 (14%)

Texel Rate

The Radeon R9 380 4G should be a lot (about 54%) better at anisotropic filtering than the Radeon HD 6950 2GB. (explain)

Radeon R9 380 4G 108640 Mtexels/sec
Radeon HD 6950 2GB 70400 Mtexels/sec
Difference: 38240 (54%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 380 4G is a better choice, and very much so. (explain)

Radeon R9 380 4G 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 4G

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 4G
Manufacturer AMD AMD
Year December 2010 June 2015
Code Name Cayman Pro Antigua PRO
Memory 2048 MB 4096 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: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher 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 maximum amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6950 2GB

Amazon.com

Check prices at:

Radeon R9 380 4G

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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