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GeForce 8800 GT 256MB vs Radeon HD 6950

Intro

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

Compare those specs to the Radeon HD 6950, which features GPU clock speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also is made up of 1408 Stream Processors, 88 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 256MB 105 Watts
Radeon HD 6950 200 Watts
Difference: 95 Watts (90%)

Memory Bandwidth

In theory, the Radeon HD 6950 will be 257% faster than the GeForce 8800 GT 256MB overall, because of its greater bandwidth. (explain)

Radeon HD 6950 160000 MB/sec
GeForce 8800 GT 256MB 44800 MB/sec
Difference: 115200 (257%)

Texel Rate

The Radeon HD 6950 should be much (about 110%) more effective at texture filtering than the GeForce 8800 GT 256MB. (explain)

Radeon HD 6950 70400 Mtexels/sec
GeForce 8800 GT 256MB 33600 Mtexels/sec
Difference: 36800 (110%)

Pixel Rate

The Radeon HD 6950 will be much (approximately 167%) faster with regards to full screen anti-aliasing than the GeForce 8800 GT 256MB, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6950 25600 Mpixels/sec
GeForce 8800 GT 256MB 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 256MB

Amazon.com

Check prices at:

Radeon HD 6950

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 6950
Manufacturer nVidia AMD
Year Dec 2007 December 2010
Code Name G92 Cayman Pro
Memory 256 MB 1024 MB
Core Speed 600 MHz 800 MHz
Memory Speed 1400 MHz 5000 MHz
Power (Max TDP) 105 watts 200 watts
Bandwidth 44800 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 largest amount of data (counted in MB per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GT 256MB

Amazon.com

Check prices at:

Radeon HD 6950

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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