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GeForce 8800 GTS (G80) 320MB vs GeForce 9800 GTX

Intro

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

Compare those specs to the GeForce 9800 GTX, which features clock speeds of 675 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs along with 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) 320MB 143 Watts
Difference: 3 Watts (2%)

Memory Bandwidth

Performance-wise, the GeForce 9800 GTX should in theory be a small bit better than the GeForce 8800 GTS (G80) 320MB overall. (explain)

GeForce 9800 GTX 70400 MB/sec
GeForce 8800 GTS (G80) 320MB 63360 MB/sec
Difference: 7040 (11%)

Texel Rate

The GeForce 9800 GTX will be much (more or less 75%) faster with regards to anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Difference: 18576 (75%)

Pixel Rate

The GeForce 9800 GTX will be a small bit (about 5%) more effective at FSAA than the GeForce 8800 GTS (G80) 320MB, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce 9800 GTX 10800 Mpixels/sec
GeForce 8800 GTS (G80) 320MB 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) 320MB

Amazon.com

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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

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Model GeForce 8800 GTS (G80) 320MB GeForce 9800 GTX
Manufacturer nVidia nVidia
Year Feb 2007 April 2008
Code Name G80 G92
Memory 320 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 (counted in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's 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 better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce 8800 GTS (G80) 320MB

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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