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GeForce GTX 280 vs Radeon HD 6950

Intro

The GeForce GTX 280 makes use of a 65 nm design. nVidia has clocked the core frequency at 602 MHz. The GDDR3 memory is set to run at a frequency of 1107 MHz on this model. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Compare all that to the Radeon HD 6950, which features core speeds of 800 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 1408 SPUs along with 88 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the Radeon HD 6950 should theoretically be a little bit better than the GeForce GTX 280 overall. (explain)

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

Texel Rate

The Radeon HD 6950 will be much (more or less 46%) more effective at AF than the GeForce GTX 280. (explain)

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

Pixel Rate

The Radeon HD 6950 should be much (approximately 33%) faster with regards to full screen anti-aliasing than the GeForce GTX 280, and also should be able to handle higher resolutions better. (explain)

Radeon HD 6950 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

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
Manufacturer nVidia AMD
Year June 17, 2008 December 2010
Code Name G200 Cayman Pro
Memory 1024 MB 1024 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 largest amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. 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 fill rate is also dependant on many other factors, most notably 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

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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