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

Intro

The GeForce 8800 GT 1GB has core speeds of 600 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 RAM. It features 112 SPUs as well as 56 TAUs and 16 ROPs.

Compare all of that to the GeForce 8800 GTS (G80) 640MB, which has a GPU core clock speed of 513 MHz, and 640 MB of GDDR3 RAM running at 792 MHz through a 320-bit bus. It also is comprised of 96 SPUs, 48 Texture Address Units, and 20 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the GeForce 8800 GTS (G80) 640MB will be 10% faster than the GeForce 8800 GT 1GB overall, due to its greater data rate. (explain)

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

Texel Rate

The GeForce 8800 GT 1GB should be a lot (more or less 36%) better at anisotropic filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

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

Pixel Rate

If running with a high resolution is important to you, then the GeForce 8800 GTS (G80) 640MB is a better choice, but not by far. (explain)

GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
GeForce 8800 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 GT 1GB

Amazon.com

Check prices at:

GeForce 8800 GTS (G80) 640MB

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 1GB GeForce 8800 GTS (G80) 640MB
Manufacturer nVidia nVidia
Year Dec 2007 Nov 2006 (640)
Code Name G92 G80
Memory 1024 MB 640 MB
Core Speed 600 MHz 513 MHz
Memory Speed 1800 MHz 1584 MHz
Power (Max TDP) 105 watts 143 watts
Bandwidth 57600 MB/sec 63360 MB/sec
Texel Rate 33600 Mtexels/sec 24624 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 10260 Mpixels/sec
Unified Shaders 112 96
Texture Mapping Units 56 48
Render Output Units 16 20
Bus Type GDDR3 GDDR3
Bus Width 256-bit 320-bit
Fab Process 65 nm 90 nm
Transistors 754 million 681 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GT 1GB

Amazon.com

Check prices at:

GeForce 8800 GTS (G80) 640MB

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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