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GeForce GTX 470 vs GeForce GTX 580 3GB


Intro

The GeForce GTX 470 has a clock speed of 607 MHz and a GDDR5 memory frequency of 837 MHz. It also makes use of a 320-bit memory bus, and uses a 40 nm design. It features 448 SPUs, 56 TAUs, and 40 Raster Operation Units.

Compare that to the GeForce GTX 580 3GB, which comes with a clock frequency of 772 MHz and a GDDR5 memory speed of 1002 MHz. It also makes use of a 384-bit memory bus, and makes use of a 40 nm design. It is comprised of 512 SPUs, 64 Texture Address Units, and 48 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 470 215 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 29 Watts (13%)

Memory Bandwidth

The GeForce GTX 580 3GB, in theory, should be quite a bit faster than the GeForce GTX 470 overall. (explain)

GeForce GTX 580 3GB 192384 MB/sec
GeForce GTX 470 133920 MB/sec
Difference: 58464 (44%)

Texel Rate

The GeForce GTX 580 3GB should be a lot (about 45%) more effective at AF than the GeForce GTX 470. (explain)

GeForce GTX 580 3GB 49408 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 15416 (45%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 580 3GB is the winner, by a large margin. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
GeForce GTX 470 24280 Mpixels/sec
Difference: 12776 (53%)

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

GeForce GTX 470

GeForce GTX 580 3GB

Specifications

Display Specifications

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Model GeForce GTX 470 GeForce GTX 580 3GB
Manufacturer nVidia nVidia
Year March 2010 November 2010
Code Name GF100 GF110
Memory 1280 MB 3072 MB
Core Speed 607 MHz 772 MHz
Memory Speed 3348 MHz 4008 MHz
Power (Max TDP) 215 watts 244 watts
Bandwidth 133920 MB/sec 192384 MB/sec
Texel Rate 33992 Mtexels/sec 49408 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 37056 Mpixels/sec
Unified Shaders 448 512
Texture Mapping Units 56 64
Render Output Units 40 48
Bus Type GDDR5 GDDR5
Bus Width 320-bit 384-bit
Fab Process 40 nm 40 nm
Transistors 3000 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 (in units of MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 reach the maximum fill rate.

GeForce GTX 470

GeForce GTX 580 3GB

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