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GeForce 8800 GTX vs GeForce 9800 GTX+

Intro

The GeForce 8800 GTX has core speeds of 575 MHz on the GPU, and 900 MHz on the 768 MB of GDDR3 memory. It features 128 SPUs as well as 64 TAUs and 24 ROPs.

Compare all that to the GeForce 9800 GTX+, which comes with core clock speeds of 738 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs along with 64 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX+ 145 Watts
GeForce 8800 GTX 155 Watts
Difference: 10 Watts (7%)

Memory Bandwidth

The GeForce 8800 GTX should theoretically perform quite a bit faster than the GeForce 9800 GTX+ overall. (explain)

GeForce 8800 GTX 86400 MB/sec
GeForce 9800 GTX+ 70400 MB/sec
Difference: 16000 (23%)

Texel Rate

The GeForce 9800 GTX+ should be a lot (more or less 28%) more effective at texture filtering than the GeForce 8800 GTX. (explain)

GeForce 9800 GTX+ 47232 Mtexels/sec
GeForce 8800 GTX 36800 Mtexels/sec
Difference: 10432 (28%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce 8800 GTX is the winner, but it probably won't make a huge difference. (explain)

GeForce 8800 GTX 13800 Mpixels/sec
GeForce 9800 GTX+ 11808 Mpixels/sec
Difference: 1992 (17%)

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 GTX

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 GTX GeForce 9800 GTX+
Manufacturer nVidia nVidia
Year Nov 2006 July 2008
Code Name G80 G92b
Memory 768 MB 512 MB
Core Speed 575 MHz 738 MHz
Memory Speed 1800 MHz 2200 MHz
Power (Max TDP) 155 watts 145 watts
Bandwidth 86400 MB/sec 70400 MB/sec
Texel Rate 36800 Mtexels/sec 47232 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 11808 Mpixels/sec
Unified Shaders 128 128
Texture Mapping Units 64 64
Render Output Units 24 16
Bus Type GDDR3 GDDR3
Bus Width 384-bit 256-bit
Fab Process 90 nm 55 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 largest amount of data (counted in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling 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 graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce 8800 GTX

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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