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GeForce 8800 GT 512MB vs Radeon HD 6950 2GB

Intro

The GeForce 8800 GT 512MB features a GPU core speed of 600 MHz, and the 512 MB of GDDR3 RAM is set to run at 900 MHz through a 256-bit bus. It also is made up of 112 SPUs, 56 TAUs, and 16 ROPs.

Compare those specifications to the Radeon HD 6950 2GB, which comes with GPU clock speed of 800 MHz, and 2048 MB of GDDR5 memory running at 1250 MHz through a 256-bit bus. It also is made up of 1408 SPUs, 88 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB 105 Watts
Radeon HD 6950 2GB 200 Watts
Difference: 95 Watts (90%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6950 2GB should be a lot faster than the GeForce 8800 GT 512MB overall. (explain)

Radeon HD 6950 2GB 160000 MB/sec
GeForce 8800 GT 512MB 57600 MB/sec
Difference: 102400 (178%)

Texel Rate

The Radeon HD 6950 2GB should be quite a bit (about 110%) better at texture filtering than the GeForce 8800 GT 512MB. (explain)

Radeon HD 6950 2GB 70400 Mtexels/sec
GeForce 8800 GT 512MB 33600 Mtexels/sec
Difference: 36800 (110%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 6950 2GB is a better choice, by a large margin. (explain)

Radeon HD 6950 2GB 25600 Mpixels/sec
GeForce 8800 GT 512MB 9600 Mpixels/sec
Difference: 16000 (167%)

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 512MB

Amazon.com

Check prices at:

Radeon HD 6950 2GB

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 512MB Radeon HD 6950 2GB
Manufacturer nVidia AMD
Year Oct 2007 December 2010
Code Name G92 Cayman Pro
Memory 512 MB 2048 MB
Core Speed 600 MHz 800 MHz
Memory Speed 1800 MHz 5000 MHz
Power (Max TDP) 105 watts 200 watts
Bandwidth 57600 MB/sec 160000 MB/sec
Texel Rate 33600 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 112 1408
Texture Mapping Units 56 88
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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the 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 graphics card could possibly record to its 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 speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GT 512MB

Amazon.com

Check prices at:

Radeon HD 6950 2GB

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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