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GeForce 8800 GS vs GeForce 9800 GX2

Intro

The GeForce 8800 GS features core clock speeds of 550 MHz on the GPU, and 800 MHz on the 384 MB of GDDR3 memory. It features 96 SPUs along with 48 TAUs and 12 ROPs.

Compare all that to the GeForce 9800 GX2, which has a clock frequency of 600 MHz and a GDDR3 memory speed of 1000 MHz. It also features a 256-bit bus, and makes use of a 65 nm design. It is made up of 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GS 105 Watts
GeForce 9800 GX2 197 Watts
Difference: 92 Watts (88%)

Memory Bandwidth

Theoretically, the GeForce 9800 GX2 should perform quite a bit faster than the GeForce 8800 GS in general. (explain)

GeForce 9800 GX2 128000 MB/sec
GeForce 8800 GS 38400 MB/sec
Difference: 89600 (233%)

Texel Rate

The GeForce 9800 GX2 is quite a bit (approximately 191%) faster with regards to AF than the GeForce 8800 GS. (explain)

GeForce 9800 GX2 76800 Mtexels/sec
GeForce 8800 GS 26400 Mtexels/sec
Difference: 50400 (191%)

Pixel Rate

The GeForce 9800 GX2 will be much (approximately 191%) more effective at AA than the GeForce 8800 GS, and will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce 9800 GX2 19200 Mpixels/sec
GeForce 8800 GS 6600 Mpixels/sec
Difference: 12600 (191%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce 8800 GS

Amazon.com

Check prices at:

GeForce 9800 GX2

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 GS GeForce 9800 GX2
Manufacturer nVidia nVidia
Year Jan 2008 Mar 2008
Code Name G92 G92
Memory 384 MB 512 MB (x2)
Core Speed 550 MHz 600 MHz (x2)
Memory Speed 1600 MHz 2000 MHz (x2)
Power (Max TDP) 105 watts 197 watts
Bandwidth 38400 MB/sec 128000 MB/sec
Texel Rate 26400 Mtexels/sec 76800 Mtexels/sec
Pixel Rate 6600 Mpixels/sec 19200 Mpixels/sec
Unified Shaders 96 128 (x2)
Texture Mapping Units 48 64 (x2)
Render Output Units 12 16 (x2)
Bus Type GDDR3 GDDR3
Bus Width 192-bit 256-bit (x2)
Fab Process 65 nm 65 nm
Transistors 754 million 754 million
Bus PCIe x16 2.0 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GS

Amazon.com

Check prices at:

GeForce 9800 GX2

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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