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GeForce GTX 460 2GB vs GeForce GTX 580

Intro

The GeForce GTX 460 2GB makes use of a 40 nm design. nVidia has clocked the core speed at 675 MHz. The GDDR5 memory runs at a speed of 900 MHz on this particular card. It features 336 SPUs along with 56 Texture Address Units and 32 ROPs.

Compare all that to the GeForce GTX 580, which has GPU core speed of 772 MHz, and 1536 MB of GDDR5 RAM running at 1002 MHz through a 384-bit bus. It also features 512 Stream Processors, 64 TAUs, and 48 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 2GB 160 Watts
GeForce GTX 580 244 Watts
Difference: 84 Watts (53%)

Memory Bandwidth

Performance-wise, the GeForce GTX 580 should theoretically be quite a bit better than the GeForce GTX 460 2GB overall. (explain)

GeForce GTX 580 192384 MB/sec
GeForce GTX 460 2GB 115200 MB/sec
Difference: 77184 (67%)

Texel Rate

The GeForce GTX 580 should be much (more or less 31%) better at anisotropic filtering than the GeForce GTX 460 2GB. (explain)

GeForce GTX 580 49408 Mtexels/sec
GeForce GTX 460 2GB 37800 Mtexels/sec
Difference: 11608 (31%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 580 is a better choice, by a large margin. (explain)

GeForce GTX 580 37056 Mpixels/sec
GeForce GTX 460 2GB 21600 Mpixels/sec
Difference: 15456 (72%)

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 460 2GB

Amazon.com

Check prices at:

GeForce GTX 580

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 460 2GB GeForce GTX 580
Manufacturer nVidia nVidia
Year July 2010 November 2010
Code Name GF104 GF110
Memory 2048 MB 1536 MB
Core Speed 675 MHz 772 MHz
Memory Speed 3600 MHz 4008 MHz
Power (Max TDP) 160 watts 244 watts
Bandwidth 115200 MB/sec 192384 MB/sec
Texel Rate 37800 Mtexels/sec 49408 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 37056 Mpixels/sec
Unified Shaders 336 512
Texture Mapping Units 56 64
Render Output Units 32 48
Bus Type GDDR5 GDDR5
Bus Width 256-bit 384-bit
Fab Process 40 nm 40 nm
Transistors 1950 million 3000 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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

Display Prices

Hide Prices

GeForce GTX 460 2GB

Amazon.com

Check prices at:

GeForce GTX 580

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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