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GeForce 8800 GTS (G80) 640MB vs GeForce 9800 GT 1GB

Intro

The GeForce 8800 GTS (G80) 640MB comes with a GPU core speed of 513 MHz, and the 640 MB of GDDR3 memory is set to run at 792 MHz through a 320-bit bus. It also is comprised of 96 Stream Processors, 48 Texture Address Units, and 20 ROPs.

Compare all of that to the GeForce 9800 GT 1GB, which features a clock speed of 600 MHz and a GDDR3 memory speed of 900 MHz. It also makes use of a 256-bit memory bus, and makes use of a 65/55 nm design. It is made up of 112 SPUs, 56 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB 105 Watts
GeForce 8800 GTS (G80) 640MB 143 Watts
Difference: 38 Watts (36%)

Memory Bandwidth

Performance-wise, the GeForce 8800 GTS (G80) 640MB should theoretically be a bit better than the GeForce 9800 GT 1GB in general. (explain)

GeForce 8800 GTS (G80) 640MB 63360 MB/sec
GeForce 9800 GT 1GB 57600 MB/sec
Difference: 5760 (10%)

Texel Rate

The GeForce 9800 GT 1GB will be a lot (more or less 36%) faster with regards to anisotropic filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce 9800 GT 1GB 33600 Mtexels/sec
GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Difference: 8976 (36%)

Pixel Rate

If using a high resolution is important to you, then the GeForce 8800 GTS (G80) 640MB is superior to the GeForce 9800 GT 1GB, but not by far. (explain)

GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
GeForce 9800 GT 1GB 9600 Mpixels/sec
Difference: 660 (7%)

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 GTS (G80) 640MB

Amazon.com

Check prices at:

GeForce 9800 GT 1GB

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 GTS (G80) 640MB GeForce 9800 GT 1GB
Manufacturer nVidia nVidia
Year Nov 2006 (640) July 2008
Code Name G80 G92a/b
Memory 640 MB 1024 MB
Core Speed 513 MHz 600 MHz
Memory Speed 1584 MHz 1800 MHz
Power (Max TDP) 143 watts 105 watts
Bandwidth 63360 MB/sec 57600 MB/sec
Texel Rate 24624 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 96 112
Texture Mapping Units 48 56
Render Output Units 20 16
Bus Type GDDR3 GDDR3
Bus Width 320-bit 256-bit
Fab Process 90 nm 65/55 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: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses 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 can be applied per second. This number is calculated by multiplying the total number of 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines 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 fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

GeForce 9800 GT 1GB

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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