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GeForce GTX 580 vs Radeon HD 7970

Intro

The GeForce GTX 580 features a clock frequency of 772 MHz and a GDDR5 memory frequency of 1002 MHz. It also makes use of a 384-bit bus, and makes use of a 40 nm design. It is comprised of 512 SPUs, 64 Texture Address Units, and 48 ROPs.

Compare all that to the Radeon HD 7970, which has clock speeds of 925 MHz on the GPU, and 1375 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 580 244 Watts
Radeon HD 7970 250 Watts
Difference: 6 Watts (2%)

Memory Bandwidth

The Radeon HD 7970 should in theory be much faster than the GeForce GTX 580 in general. (explain)

Radeon HD 7970 264000 MB/sec
GeForce GTX 580 192384 MB/sec
Difference: 71616 (37%)

Texel Rate

The Radeon HD 7970 is quite a bit (about 140%) more effective at anisotropic filtering than the GeForce GTX 580. (explain)

Radeon HD 7970 118400 Mtexels/sec
GeForce GTX 580 49408 Mtexels/sec
Difference: 68992 (140%)

Pixel Rate

The GeForce GTX 580 should be much (approximately 25%) more effective at FSAA than the Radeon HD 7970, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 580 37056 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 7456 (25%)

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.

GeForce GTX 580

Amazon.com

Other US-based stores

Radeon HD 7970

Amazon.com

Other US-based stores

Specifications

Model GeForce GTX 580 Radeon HD 7970
Manufacturer nVidia ATi
Year November 2010 January 2012
Code Name GF110 Tahiti XT
Fab Process 40 nm 28 nm
Bus PCIe x16 PCIe 3.0 x16
Memory 1536 MB 3072 MB
Core Speed 772 MHz 925 MHz
Shader Speed 1544 MHz (N/A) MHz
Memory Speed 1002 MHz (4008 MHz effective) 1375 MHz (5500 MHz effective)
Unified Shaders 512 2048
Texture Mapping Units 64 128
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 384-bit
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2
Power (Max TDP) 244 watts 250 watts
Shader Model 5.0 5.0
Bandwidth 192384 MB/sec 264000 MB/sec
Texel Rate 49408 Mtexels/sec 118400 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 29600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be 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 the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Comments

3 Responses to “GeForce GTX 580 vs Radeon HD 7970”
kazamajean says:
hmmm it seems hd770 won in memory bus and texel rate but the 580 won the pixel rate, but who is the best among them?
tim says:
yes the 7970 is the winner, because of its 140% win over the 580 in the texel rate :D
Vemri says:
AMD 7970 absolutely more fast than 580, but they still can't handle physx engine in some way they been kicked by Nvidia 2010 card technology.
it depend on your gaming needs and specification.
in this case (hi-end gaming) i am still in the "GREEN" side. they are fast as well.
but for my brothers PC i chose AMD beast gaming machine for the mid-end gaming.

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