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GeForce 8800 GT 1GB vs GeForce 9800 GTX

Intro

The GeForce 8800 GT 1GB features clock speeds of 600 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 memory. It features 112 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Compare those specs to the GeForce 9800 GTX, which comes with a GPU core clock speed of 675 MHz, and 512 MB of GDDR3 RAM running at 1100 MHz through a 256-bit bus. It also features 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 1GB 105 Watts
GeForce 9800 GTX 140 Watts
Difference: 35 Watts (33%)

Memory Bandwidth

Performance-wise, the GeForce 9800 GTX should theoretically be a lot superior to the GeForce 8800 GT 1GB overall. (explain)

GeForce 9800 GTX 70400 MB/sec
GeForce 8800 GT 1GB 57600 MB/sec
Difference: 12800 (22%)

Texel Rate

The GeForce 9800 GTX will be a lot (more or less 29%) more effective at texture filtering than the GeForce 8800 GT 1GB. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
GeForce 8800 GT 1GB 33600 Mtexels/sec
Difference: 9600 (29%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 9800 GTX is the winner, but only just. (explain)

GeForce 9800 GTX 10800 Mpixels/sec
GeForce 8800 GT 1GB 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 1GB

Amazon.com

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GeForce 9800 GTX

Amazon.com

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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 1GB GeForce 9800 GTX
Manufacturer nVidia nVidia
Year Dec 2007 April 2008
Code Name G92 G92
Memory 1024 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 maximum amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 can be applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 8800 GT 1GB

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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