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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 speed at 550 MHz. The GDDR3 RAM is set to run at a speed of 800 MHz on this specific card. It features 96 SPUs along with 48 TAUs and 12 Rasterization Operator Units.

Compare those specifications to the GeForce 8800 GT 256MB, which makes use of a 65 nm design. nVidia has set the core frequency at 600 MHz. The GDDR3 RAM works at a frequency of 700 MHz on this specific model. 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

In theory, the GeForce 8800 GT 256MB should be 17% faster than the GeForce 8800 GS overall, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce 8800 GT 256MB is quite a bit (more or less 27%) more effective at AF than the GeForce 8800 GS. (explain)

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

Pixel Rate

The GeForce 8800 GT 256MB will be a lot (approximately 45%) faster with regards to full screen anti-aliasing than the GeForce 8800 GS, and also should be capable of handling higher screen resolutions better. (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 maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to 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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