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GeForce 8800 GS vs GeForce 8800 GT 256MB

Intro

The GeForce 8800 GS uses a 65 nm design. nVidia has clocked the core frequency at 550 MHz. The GDDR3 RAM is set to run at a speed of 800 MHz on this particular model. It features 96 SPUs as well as 48 TAUs and 12 ROPs.

Compare all that to the GeForce 8800 GT 256MB, which features core speeds of 600 MHz on the GPU, and 700 MHz on the 256 MB of GDDR3 RAM. It features 112 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce 8800 GT 256MB should in theory be just a bit faster than the GeForce 8800 GS in general. (explain)

GeForce 8800 GT 256MB 44800 MB/sec
GeForce 8800 GS 38400 MB/sec
Difference: 6400 (17%)

Texel Rate

The GeForce 8800 GT 256MB should be quite a bit (approximately 27%) more effective at texture filtering than the GeForce 8800 GS. (explain)

GeForce 8800 GT 256MB 33600 Mtexels/sec
GeForce 8800 GS 26400 Mtexels/sec
Difference: 7200 (27%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 GT 256MB is the winner, by a large margin. (explain)

GeForce 8800 GT 256MB 9600 Mpixels/sec
GeForce 8800 GS 6600 Mpixels/sec
Difference: 3000 (45%)

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 GS

Amazon.com

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GeForce 8800 GT 256MB

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 GS GeForce 8800 GT 256MB
Manufacturer nVidia nVidia
Year Jan 2008 Dec 2007
Code Name G92 G92
Memory 384 MB 256 MB
Core Speed 550 MHz 600 MHz
Memory Speed 1600 MHz 1400 MHz
Power (Max TDP) 105 watts 105 watts
Bandwidth 38400 MB/sec 44800 MB/sec
Texel Rate 26400 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 6600 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 96 112
Texture Mapping Units 48 56
Render Output Units 12 16
Bus Type GDDR3 GDDR3
Bus Width 192-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 MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce 8800 GS

Amazon.com

Check prices at:

GeForce 8800 GT 256MB

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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