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GeForce 8800 GT 512MB vs GeForce 9800 GTX

Intro

The GeForce 8800 GT 512MB comes with a core clock frequency of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 256-bit memory bus, and makes use of a 65 nm design. It features 112 SPUs, 56 Texture Address Units, and 16 ROPs.

Compare all that to the GeForce 9800 GTX, which has a core clock speed of 675 MHz and a GDDR3 memory frequency of 1100 MHz. It also makes use of a 256-bit bus, and uses a 65 nm design. It is made up of 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB 105 Watts
GeForce 9800 GTX 140 Watts
Difference: 35 Watts (33%)

Memory Bandwidth

In theory, the GeForce 9800 GTX should be quite a bit faster than the GeForce 8800 GT 512MB overall. (explain)

GeForce 9800 GTX 70400 MB/sec
GeForce 8800 GT 512MB 57600 MB/sec
Difference: 12800 (22%)

Texel Rate

The GeForce 9800 GTX is quite a bit (approximately 29%) more effective at AF than the GeForce 8800 GT 512MB. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
GeForce 8800 GT 512MB 33600 Mtexels/sec
Difference: 9600 (29%)

Pixel Rate

The GeForce 9800 GTX should be a bit (approximately 13%) better at anti-aliasing than the GeForce 8800 GT 512MB, and also able to handle higher resolutions while still performing well. (explain)

GeForce 9800 GTX 10800 Mpixels/sec
GeForce 8800 GT 512MB 9600 Mpixels/sec
Difference: 1200 (13%)

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 GT 512MB

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

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Model GeForce 8800 GT 512MB GeForce 9800 GTX
Manufacturer nVidia nVidia
Year Oct 2007 April 2008
Code Name G92 G92
Memory 512 MB 512 MB
Core Speed 600 MHz 675 MHz
Memory Speed 1800 MHz 2200 MHz
Power (Max TDP) 105 watts 140 watts
Bandwidth 57600 MB/sec 70400 MB/sec
Texel Rate 33600 Mtexels/sec 43200 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 10800 Mpixels/sec
Unified Shaders 112 128
Texture Mapping Units 56 64
Render Output Units 16 16
Bus Type GDDR3 GDDR3
Bus Width 256-bit 256-bit
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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported 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. If it uses 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GT 512MB

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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