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GeForce 8800 GTS (G80) 640MB vs GeForce GTX 570

Intro

The GeForce 8800 GTS (G80) 640MB makes use of a 90 nm design. nVidia has clocked the core frequency at 513 MHz. The GDDR3 RAM is set to run at a speed of 792 MHz on this specific card. It features 96 SPUs as well as 48 Texture Address Units and 20 Rasterization Operator Units.

Compare those specs to the GeForce GTX 570, which has GPU clock speed of 732 MHz, and 1280 MB of GDDR5 memory running at 950 MHz through a 320-bit bus. It also is comprised of 480 SPUs, 60 TAUs, and 40 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 640MB 143 Watts
GeForce GTX 570 219 Watts
Difference: 76 Watts (53%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 570 should in theory be quite a bit superior to the GeForce 8800 GTS (G80) 640MB overall. (explain)

GeForce GTX 570 152000 MB/sec
GeForce 8800 GTS (G80) 640MB 63360 MB/sec
Difference: 88640 (140%)

Texel Rate

The GeForce GTX 570 is a lot (more or less 78%) faster with regards to AF than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce GTX 570 43920 Mtexels/sec
GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Difference: 19296 (78%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 570 is the winner, and very much so. (explain)

GeForce GTX 570 29280 Mpixels/sec
GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
Difference: 19020 (185%)

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

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GeForce GTX 570

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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 570
Manufacturer nVidia nVidia
Year Nov 2006 (640) December 2010
Code Name G80 GF110
Memory 640 MB 1280 MB
Core Speed 513 MHz 732 MHz
Memory Speed 1584 MHz 3800 MHz
Power (Max TDP) 143 watts 219 watts
Bandwidth 63360 MB/sec 152000 MB/sec
Texel Rate 24624 Mtexels/sec 43920 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 29280 Mpixels/sec
Unified Shaders 96 480
Texture Mapping Units 48 60
Render Output Units 20 40
Bus Type GDDR3 GDDR5
Bus Width 320-bit 320-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 maximum amount of information (counted in megabytes per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of 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

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GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

GeForce GTX 570

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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