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GeForce GTX 280 vs Radeon HD 6950

Intro

The GeForce GTX 280 has a core clock speed of 602 MHz and a GDDR3 memory frequency of 1107 MHz. It also features a 512-bit memory bus, and uses a 65 nm design. It features 240 SPUs, 80 TAUs, and 32 ROPs.

Compare those specifications to the Radeon HD 6950, which has core speeds of 800 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. 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 200 Watts
GeForce GTX 280 236 Watts
Difference: 36 Watts (18%)

Memory Bandwidth

Theoretically, the Radeon HD 6950 should be a small bit faster than the GeForce GTX 280 in general. (explain)

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

Texel Rate

The Radeon HD 6950 is quite a bit (about 46%) faster with regards to texture filtering than the GeForce GTX 280. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6950 is a better choice, and very much so. (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 information (in units of MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the 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 amount of pixels that 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 clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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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.

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