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

Intro

The GeForce 8800 GTS (G80) 640MB uses a 90 nm design. nVidia has set the core frequency at 513 MHz. The GDDR3 memory works at a speed of 792 MHz on this specific card. It features 96 SPUs as well as 48 TAUs and 20 Rasterization Operator Units.

Compare all of that to the GeForce 9800 GTX, which makes use of a 65 nm design. nVidia has set the core frequency at 675 MHz. The GDDR3 RAM runs at a speed of 1100 MHz on this specific model. It features 128 SPUs along with 64 Texture Address Units and 16 Rasterization Operator Units.

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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

The GeForce 9800 GTX should theoretically be a small bit faster than the GeForce 8800 GTS (G80) 640MB overall. (explain)

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

Texel Rate

The GeForce 9800 GTX is much (approximately 75%) better at 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 high levels of AA is important to you, then the GeForce 9800 GTX is superior to the GeForce 8800 GTS (G80) 640MB, but not by far. (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

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GeForce 9800 GTX

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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 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: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 processed per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per 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 - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant 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 maximum fill rate.

Display Prices

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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.

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