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GeForce GTX 580 3GB vs Radeon HD 7870 XT

Intro

The GeForce GTX 580 3GB features clock speeds of 772 MHz on the GPU, and 1002 MHz on the 3072 MB of GDDR5 memory. It features 512 SPUs along with 64 Texture Address Units and 48 ROPs.

Compare all that to the Radeon HD 7870 XT, which has core clock speeds of 925 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 96 TAUs and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT 185 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 59 Watts (32%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 3GB should theoretically be just a bit better than the Radeon HD 7870 XT overall. (explain)

GeForce GTX 580 3GB 192384 MB/sec
Radeon HD 7870 XT 192000 MB/sec
Difference: 384 (0%)

Texel Rate

The Radeon HD 7870 XT will be much (more or less 80%) faster with regards to AF than the GeForce GTX 580 3GB. (explain)

Radeon HD 7870 XT 88800 Mtexels/sec
GeForce GTX 580 3GB 49408 Mtexels/sec
Difference: 39392 (80%)

Pixel Rate

The GeForce GTX 580 3GB will be quite a bit (about 25%) faster with regards to AA than the Radeon HD 7870 XT, and also capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
Radeon HD 7870 XT 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 3GB

Amazon.com

Check prices at:

Radeon HD 7870 XT

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 GeForce GTX 580 3GB Radeon HD 7870 XT
Manufacturer nVidia AMD
Year November 2010 November 2012
Code Name GF110 Tahiti LE
Memory 3072 MB 2048 MB
Core Speed 772 MHz 925 MHz
Memory Speed 4008 MHz 6000 MHz
Power (Max TDP) 244 watts 185 watts
Bandwidth 192384 MB/sec 192000 MB/sec
Texel Rate 49408 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 512 1536
Texture Mapping Units 64 96
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-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 4.3

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 580 3GB

Amazon.com

Check prices at:

Radeon HD 7870 XT

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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