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GeForce 8800 GTS (G80) 640MB vs GeForce GTX 580

Intro

The GeForce 8800 GTS (G80) 640MB comes with a clock speed of 513 MHz and a GDDR3 memory speed of 792 MHz. It also uses a 320-bit bus, and makes use of a 90 nm design. It is comprised of 96 SPUs, 48 Texture Address Units, and 20 ROPs.

Compare all of that to the GeForce GTX 580, which has clock speeds of 772 MHz on the GPU, and 1002 MHz on the 1536 MB of GDDR5 memory. It features 512 SPUs along with 64 TAUs and 48 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 640MB 143 Watts
GeForce GTX 580 244 Watts
Difference: 101 Watts (71%)

Memory Bandwidth

In theory, the GeForce GTX 580 is 204% faster than the GeForce 8800 GTS (G80) 640MB overall, due to its greater data rate. (explain)

GeForce GTX 580 192384 MB/sec
GeForce 8800 GTS (G80) 640MB 63360 MB/sec
Difference: 129024 (204%)

Texel Rate

The GeForce GTX 580 should be a lot (about 101%) faster with regards to AF than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce GTX 580 49408 Mtexels/sec
GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Difference: 24784 (101%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 580 is the winner, and very much so. (explain)

GeForce GTX 580 37056 Mpixels/sec
GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
Difference: 26796 (261%)

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 8800 GTS (G80) 640MB

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 8800 GTS (G80) 640MB GeForce GTX 580
Manufacturer nVidia nVidia
Year Nov 2006 (640) November 2010
Code Name G80 GF110
Memory 640 MB 1536 MB
Core Speed 513 MHz 772 MHz
Memory Speed 1584 MHz 4008 MHz
Power (Max TDP) 143 watts 244 watts
Bandwidth 63360 MB/sec 192384 MB/sec
Texel Rate 24624 Mtexels/sec 49408 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 37056 Mpixels/sec
Unified Shaders 96 512
Texture Mapping Units 48 64
Render Output Units 20 48
Bus Type GDDR3 GDDR5
Bus Width 320-bit 384-bit
Fab Process 90 nm 40 nm
Transistors 681 million 3000 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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 bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 640MB

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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