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GeForce 8800 GTS (G80) 640MB vs GeForce 9800 GTX

Intro

The GeForce 8800 GTS (G80) 640MB has a GPU clock speed of 513 MHz, and the 640 MB of GDDR3 RAM runs at 792 MHz through a 320-bit bus. It also features 96 SPUs, 48 TAUs, and 20 Raster Operation Units.

Compare all that to the GeForce 9800 GTX, which features clock speeds of 675 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 memory. It features 128 SPUs as well as 64 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX 140 Watts
GeForce 8800 GTS (G80) 640MB 143 Watts
Difference: 3 Watts (2%)

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GTX should be 11% quicker than the GeForce 8800 GTS (G80) 640MB overall, due to its greater bandwidth. (explain)

GeForce 9800 GTX 70400 MB/sec
GeForce 8800 GTS (G80) 640MB 63360 MB/sec
Difference: 7040 (11%)

Texel Rate

The GeForce 9800 GTX will be quite a bit (more or less 75%) faster with regards to AF than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Difference: 18576 (75%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 9800 GTX is the winner, but it probably won't make a huge difference. (explain)

GeForce 9800 GTX 10800 Mpixels/sec
GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
Difference: 540 (5%)

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

Check prices at:

GeForce 9800 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.

Specifications

Display Specifications

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Model GeForce 8800 GTS (G80) 640MB GeForce 9800 GTX
Manufacturer nVidia nVidia
Year Nov 2006 (640) April 2008
Code Name G80 G92
Memory 640 MB 512 MB
Core Speed 513 MHz 675 MHz
Memory Speed 1584 MHz 2200 MHz
Power (Max TDP) 143 watts 140 watts
Bandwidth 63360 MB/sec 70400 MB/sec
Texel Rate 24624 Mtexels/sec 43200 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 10800 Mpixels/sec
Unified Shaders 96 128
Texture Mapping Units 48 64
Render Output Units 20 16
Bus Type GDDR3 GDDR3
Bus Width 320-bit 256-bit
Fab Process 90 nm 65 nm
Transistors 681 million 754 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many 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

Hide Prices

GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

GeForce 9800 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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