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GeForce 8800 GTX vs GeForce 9800 GTX

Intro

The GeForce 8800 GTX makes use of a 90 nm design. nVidia has set the core frequency at 575 MHz. The GDDR3 RAM works at a frequency of 900 MHz on this particular card. It features 128 SPUs along with 64 TAUs and 24 ROPs.

Compare those specifications to the GeForce 9800 GTX, which makes use of a 65 nm design. nVidia has set the core frequency at 675 MHz. The GDDR3 memory runs at a frequency of 1100 MHz on this specific model. It features 128 SPUs as well as 64 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX 140 Watts
GeForce 8800 GTX 155 Watts
Difference: 15 Watts (11%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTX should perform a lot faster than the GeForce 9800 GTX in general. (explain)

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

Texel Rate

The GeForce 9800 GTX is a bit (about 17%) better at texture filtering than the GeForce 8800 GTX. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
GeForce 8800 GTX 36800 Mtexels/sec
Difference: 6400 (17%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 8800 GTX is superior to the GeForce 9800 GTX, by far. (explain)

GeForce 8800 GTX 13800 Mpixels/sec
GeForce 9800 GTX 10800 Mpixels/sec
Difference: 3000 (28%)

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

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 GTX GeForce 9800 GTX
Manufacturer nVidia nVidia
Year Nov 2006 April 2008
Code Name G80 G92
Memory 768 MB 512 MB
Core Speed 575 MHz 675 MHz
Memory Speed 1800 MHz 2200 MHz
Power (Max TDP) 155 watts 140 watts
Bandwidth 86400 MB/sec 70400 MB/sec
Texel Rate 36800 Mtexels/sec 43200 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 10800 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 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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock 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 many other factors, especially the memory bandwidth of the card - the lower the 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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