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GeForce 8800 GT 512MB vs GeForce 9800 GTX

Intro

The GeForce 8800 GT 512MB comes with a clock speed of 600 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 256-bit bus, and uses a 65 nm design. It is comprised of 112 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Compare those specs to the GeForce 9800 GTX, which features core clock speeds of 675 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs as well as 64 TAUs and 16 ROPs.

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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

The GeForce 9800 GTX should in theory perform quite a bit faster than the GeForce 8800 GT 512MB in general. (explain)

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

Texel Rate

The GeForce 9800 GTX will be much (approximately 29%) better 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

If using high levels of AA is important to you, then the GeForce 9800 GTX is a better choice, not by a very large margin though. (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: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, 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 anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the 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 speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 reach the maximum fill rate.

Display Prices

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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.

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