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GeForce 8800 GT 512MB vs Radeon HD 6950 2GB

Intro

The GeForce 8800 GT 512MB makes use of a 65 nm design. nVidia has set the core frequency at 600 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this specific card. It features 112 SPUs along with 56 TAUs and 16 ROPs.

Compare all that to the Radeon HD 6950 2GB, which features clock speeds of 800 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 RAM. It features 1408 SPUs along with 88 TAUs and 32 Rasterization Operator Units.

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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

The Radeon HD 6950 2GB should theoretically perform much 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 will be a lot (approximately 110%) faster with regards to 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

The Radeon HD 6950 2GB will be quite a bit (more or less 167%) more effective at FSAA than the GeForce 8800 GT 512MB, and should be capable of handling higher screen resolutions without losing too much performance. (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: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 can be applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, 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 maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum 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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