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GeForce GTX 480 vs Radeon HD 6950 2GB

Intro

The GeForce GTX 480 features a GPU core clock speed of 700 MHz, and the 1536 MB of GDDR5 RAM is set to run at 924 MHz through a 384-bit bus. It also features 480 Stream Processors, 60 TAUs, and 48 ROPs.

Compare all that to the Radeon HD 6950 2GB, which features a clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It features 1408 SPUs, 88 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 2GB 200 Watts
GeForce GTX 480 250 Watts
Difference: 50 Watts (25%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 480 should theoretically be a little bit superior to the Radeon HD 6950 2GB overall. (explain)

GeForce GTX 480 177408 MB/sec
Radeon HD 6950 2GB 160000 MB/sec
Difference: 17408 (11%)

Texel Rate

The Radeon HD 6950 2GB will be a lot (more or less 68%) more effective at anisotropic filtering than the GeForce GTX 480. (explain)

Radeon HD 6950 2GB 70400 Mtexels/sec
GeForce GTX 480 42000 Mtexels/sec
Difference: 28400 (68%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 480 is the winner, by far. (explain)

GeForce GTX 480 33600 Mpixels/sec
Radeon HD 6950 2GB 25600 Mpixels/sec
Difference: 8000 (31%)

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 480

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 480 Radeon HD 6950 2GB
Manufacturer nVidia AMD
Year March 2010 December 2010
Code Name GF100 Cayman Pro
Memory 1536 MB 2048 MB
Core Speed 700 MHz 800 MHz
Memory Speed 3696 MHz 5000 MHz
Power (Max TDP) 250 watts 200 watts
Bandwidth 177408 MB/sec 160000 MB/sec
Texel Rate 42000 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 480 1408
Texture Mapping Units 60 88
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 3000 million 2640 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 480

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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