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GeForce 8800 GT 256MB vs Radeon HD 6970

Intro

The GeForce 8800 GT 256MB has a clock speed of 600 MHz and a GDDR3 memory speed of 700 MHz. It also makes use of a 256-bit bus, and makes use of a 65 nm design. It is made up of 112 SPUs, 56 TAUs, and 16 Raster Operation Units.

Compare all that to the Radeon HD 6970, which uses a 40 nm design. AMD has clocked the core frequency at 880 MHz. The GDDR5 memory works at a frequency of 1375 MHz on this particular model. It features 1536 SPUs as well as 96 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 256MB 105 Watts
Radeon HD 6970 250 Watts
Difference: 145 Watts (138%)

Memory Bandwidth

The Radeon HD 6970, in theory, should be a lot faster than the GeForce 8800 GT 256MB in general. (explain)

Radeon HD 6970 176000 MB/sec
GeForce 8800 GT 256MB 44800 MB/sec
Difference: 131200 (293%)

Texel Rate

The Radeon HD 6970 will be much (approximately 151%) faster with regards to anisotropic filtering than the GeForce 8800 GT 256MB. (explain)

Radeon HD 6970 84480 Mtexels/sec
GeForce 8800 GT 256MB 33600 Mtexels/sec
Difference: 50880 (151%)

Pixel Rate

The Radeon HD 6970 is much (about 193%) more effective at anti-aliasing than the GeForce 8800 GT 256MB, and capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 6970 28160 Mpixels/sec
GeForce 8800 GT 256MB 9600 Mpixels/sec
Difference: 18560 (193%)

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 256MB

Amazon.com

Check prices at:

Radeon HD 6970

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 256MB Radeon HD 6970
Manufacturer nVidia AMD
Year Dec 2007 December 2010
Code Name G92 Cayman XT
Memory 256 MB 2048 MB
Core Speed 600 MHz 880 MHz
Memory Speed 1400 MHz 5500 MHz
Power (Max TDP) 105 watts 250 watts
Bandwidth 44800 MB/sec 176000 MB/sec
Texel Rate 33600 Mtexels/sec 84480 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 28160 Mpixels/sec
Unified Shaders 112 1536
Texture Mapping Units 56 96
Render Output Units 16 32
Bus Type GDDR3 GDDR5
Bus Width 256-bit 256-bit
Fab Process 65 nm 40 nm
Transistors 754 million 2640 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - 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 256MB

Amazon.com

Check prices at:

Radeon HD 6970

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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