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GeForce GTX 280 vs Radeon HD 6950 2GB

Intro

The GeForce GTX 280 comes with clock speeds of 602 MHz on the GPU, and 1107 MHz on the 1024 MB of GDDR3 RAM. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Compare those specs to the Radeon HD 6950 2GB, which makes use of a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 memory works at a speed of 1250 MHz on this specific card. It features 1408 SPUs along with 88 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 2GB 200 Watts
GeForce GTX 280 236 Watts
Difference: 36 Watts (18%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6950 2GB should in theory be a little bit better than the GeForce GTX 280 in general. (explain)

Radeon HD 6950 2GB 160000 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 18304 (13%)

Texel Rate

The Radeon HD 6950 2GB should be a lot (about 46%) more effective at AF than the GeForce GTX 280. (explain)

Radeon HD 6950 2GB 70400 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 22240 (46%)

Pixel Rate

The Radeon HD 6950 2GB is quite a bit (more or less 33%) more effective at anti-aliasing than the GeForce GTX 280, and also should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 6950 2GB 25600 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 6336 (33%)

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 GTX 280

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 GTX 280 Radeon HD 6950 2GB
Manufacturer nVidia AMD
Year June 17, 2008 December 2010
Code Name G200 Cayman Pro
Memory 1024 MB 2048 MB
Core Speed 602 MHz 800 MHz
Memory Speed 2214 MHz 5000 MHz
Power (Max TDP) 236 watts 200 watts
Bandwidth 141696 MB/sec 160000 MB/sec
Texel Rate 48160 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 19264 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 240 1408
Texture Mapping Units 80 88
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 65 nm 40 nm
Transistors 1400 million 2640 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 280

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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