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GeForce GTX 580 vs Radeon HD 7970

Intro

The GeForce GTX 580 has a GPU clock speed of 772 MHz, and the 1536 MB of GDDR5 RAM is set to run at 1002 MHz through a 384-bit bus. It also is comprised of 512 SPUs, 64 TAUs, and 48 Raster Operation Units.

Compare that to the Radeon HD 7970, which uses a 28 nm design. AMD has clocked the core speed at 925 MHz. The GDDR5 memory runs at a speed of 1375 MHz on this model. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

Grand Theft Auto V | 1920x1080 | Very High

Radeon HD 7970 37 FPS
GeForce GTX 580 25 FPS
Difference: 12 (48%)

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

Theoretically speaking, the Radeon HD 7970 will be 37% quicker than the GeForce GTX 580 in general, because of its higher bandwidth. (explain)

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

Texel Rate

The Radeon HD 7970 should be a lot (more or less 140%) better at texture filtering than the GeForce GTX 580. (explain)

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

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 580 is superior to the Radeon HD 7970, and very much so. (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

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Model GeForce GTX 580 Radeon HD 7970
Manufacturer nVidia AMD
Year November 2010 January 2012
Code Name GF110 Tahiti XT
Memory 1536 MB 3072 MB
Core Speed 772 MHz 925 MHz
Memory Speed 4008 MHz 5500 MHz
Power (Max TDP) 244 watts 250 watts
Bandwidth 192384 MB/sec 264000 MB/sec
Texel Rate 49408 Mtexels/sec 118400 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 512 2048
Texture Mapping Units 64 128
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 384-bit
Fab Process 40 nm 28 nm
Transistors 3000 million 4313 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If 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 figure 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 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 most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability 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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