Join Us On Facebook

Compare any two graphics cards:
VS

Radeon HD 6970 vs Radeon HD 7950

Intro

The Radeon HD 6970 has a clock frequency of 880 MHz and a GDDR5 memory frequency of 1375 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It features 1536 SPUs, 96 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 7950, which features GPU clock speed of 800 MHz, and 1536 MB of GDDR5 RAM running at 1250 MHz through a 384-bit bus. It also features 1792 Stream Processors, 112 Texture Address Units, and 32 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 200 Watts
Radeon HD 6970 250 Watts
Difference: 50 Watts (25%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7950 is 36% faster than the Radeon HD 6970 overall, because of its greater bandwidth. (explain)

Radeon HD 7950 240000 MB/sec
Radeon HD 6970 176000 MB/sec
Difference: 64000 (36%)

Texel Rate

The Radeon HD 7950 is a bit (more or less 6%) faster with regards to texture filtering than the Radeon HD 6970. (explain)

Radeon HD 7950 89600 Mtexels/sec
Radeon HD 6970 84480 Mtexels/sec
Difference: 5120 (6%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 6970 is the winner, but only just. (explain)

Radeon HD 6970 28160 Mpixels/sec
Radeon HD 7950 25600 Mpixels/sec
Difference: 2560 (10%)

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

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

Radeon HD 6970

Amazon.com

Other US-based stores

Radeon HD 7950

Amazon.com

Other US-based stores

Specifications

Model Radeon HD 6970 Radeon HD 7950
Manufacturer ATi ATi
Year December 2010 January 2012
Code Name Cayman XT Tahiti Pro
Fab Process 40 nm 28 nm
Bus PCIe x16 PCIe 3.0 x16
Memory 2048 MB 1536 MB
Core Speed 880 MHz 800 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1375 MHz (5500 MHz effective) 1250 MHz (5000 MHz effective)
Unified Shaders 1536 1792
Texture Mapping Units 96 112
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 384-bit
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2
Power (Max TDP) 250 watts 200 watts
Shader Model 5.0 5.0
Bandwidth 176000 MB/sec 240000 MB/sec
Texel Rate 84480 Mtexels/sec 89600 Mtexels/sec
Pixel Rate 28160 Mpixels/sec 25600 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has 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 better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Comments

Be the first to leave a comment!

Your email address will not be published.


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Spam Protection by WP-SpamFree