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GeForce 8800 GTS (G80) 320MB vs GeForce 8800 GTX

Intro

The GeForce 8800 GTS (G80) 320MB uses a 90 nm design. nVidia has set the core frequency at 513 MHz. The GDDR3 RAM works at a speed of 792 MHz on this particular model. It features 96 SPUs as well as 48 TAUs and 20 Rasterization Operator Units.

Compare all that to the GeForce 8800 GTX, which has core clock speeds of 575 MHz on the GPU, and 900 MHz on the 768 MB of GDDR3 RAM. It features 128 SPUs as well as 64 TAUs and 24 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 320MB 143 Watts
GeForce 8800 GTX 155 Watts
Difference: 12 Watts (8%)

Memory Bandwidth

Performance-wise, the GeForce 8800 GTX should in theory be quite a bit better than the GeForce 8800 GTS (G80) 320MB in general. (explain)

GeForce 8800 GTX 86400 MB/sec
GeForce 8800 GTS (G80) 320MB 63360 MB/sec
Difference: 23040 (36%)

Texel Rate

The GeForce 8800 GTX is a lot (about 49%) better at AF than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce 8800 GTX 36800 Mtexels/sec
GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Difference: 12176 (49%)

Pixel Rate

If using a high resolution is important to you, then the GeForce 8800 GTX is a better choice, by a large margin. (explain)

GeForce 8800 GTX 13800 Mpixels/sec
GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
Difference: 3540 (35%)

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) 320MB

Amazon.com

Check prices at:

GeForce 8800 GTX

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) 320MB GeForce 8800 GTX
Manufacturer nVidia nVidia
Year Feb 2007 Nov 2006
Code Name G80 G80
Memory 320 MB 768 MB
Core Speed 513 MHz 575 MHz
Memory Speed 1584 MHz 1800 MHz
Power (Max TDP) 143 watts 155 watts
Bandwidth 63360 MB/sec 86400 MB/sec
Texel Rate 24624 Mtexels/sec 36800 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 13800 Mpixels/sec
Unified Shaders 96 128
Texture Mapping Units 48 64
Render Output Units 20 24
Bus Type GDDR3 GDDR3
Bus Width 320-bit 384-bit
Fab Process 90 nm 90 nm
Transistors 681 million 681 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 per second. This is worked out by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 8800 GTS (G80) 320MB

Amazon.com

Check prices at:

GeForce 8800 GTX

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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