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GeForce GTX 580 vs Radeon HD 7970

Intro

The GeForce GTX 580 comes with a GPU core speed of 772 MHz, and the 1536 MB of GDDR5 memory runs at 1002 MHz through a 384-bit bus. It also is made up of 512 Stream Processors, 64 TAUs, and 48 Raster Operation Units.

Compare those specifications to the Radeon HD 7970, which has a clock frequency of 925 MHz and a GDDR5 memory frequency of 1375 MHz. It also uses a 384-bit memory bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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(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 theoretically be much faster than the GeForce GTX 580 overall. (explain)

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

Texel Rate

The Radeon HD 7970 will be much (approximately 140%) better 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 quite a bit (approximately 25%) more effective at FSAA than the Radeon HD 7970, and also should be able to handle higher resolutions better. (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

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GeForce GTX 580

Amazon.com

Radeon HD 7970

Amazon.com

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

Display Specifications

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Model GeForce GTX 580 Radeon HD 7970
Manufacturer nVidia AMD
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 largest amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video 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 number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max 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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