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GeForce GTX 460 2GB vs GeForce GTX 580

Intro

The GeForce GTX 460 2GB has core clock speeds of 675 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR5 RAM. It features 336 SPUs as well as 56 Texture Address Units and 32 ROPs.

Compare those specifications to the GeForce GTX 580, which uses a 40 nm design. nVidia has set the core speed at 772 MHz. The GDDR5 memory runs at a speed of 1002 MHz on this specific model. It features 512 SPUs as well as 64 TAUs and 48 Rasterization Operator 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

In theory, the GeForce GTX 580 should perform much faster than the GeForce GTX 460 2GB in general. (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 a lot (approximately 31%) faster with regards to texture 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

The GeForce GTX 580 should be a lot (more or less 72%) faster with regards to AA than the GeForce GTX 460 2GB, and also will be able to handle higher screen resolutions while still performing well. (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

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GeForce GTX 580

Amazon.com

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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 max amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the 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 amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video 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 chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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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.

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