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GeForce GTX 580 3GB vs Radeon HD 6950

Intro

The GeForce GTX 580 3GB comes with a GPU core clock speed of 772 MHz, and the 3072 MB of GDDR5 memory runs at 1002 MHz through a 384-bit bus. It also is comprised of 512 SPUs, 64 TAUs, and 48 ROPs.

Compare those specs to the Radeon HD 6950, which has a GPU core clock speed of 800 MHz, and 1024 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also features 1408 Stream Processors, 88 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 200 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 44 Watts (22%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 3GB should in theory be a small bit better than the Radeon HD 6950 in general. (explain)

GeForce GTX 580 3GB 192384 MB/sec
Radeon HD 6950 160000 MB/sec
Difference: 32384 (20%)

Texel Rate

The Radeon HD 6950 should be a lot (about 42%) better at AF than the GeForce GTX 580 3GB. (explain)

Radeon HD 6950 70400 Mtexels/sec
GeForce GTX 580 3GB 49408 Mtexels/sec
Difference: 20992 (42%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 580 3GB is superior to the Radeon HD 6950, and very much so. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
Radeon HD 6950 25600 Mpixels/sec
Difference: 11456 (45%)

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 580 3GB

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 580 3GB Radeon HD 6950
Manufacturer nVidia AMD
Year November 2010 December 2010
Code Name GF110 Cayman Pro
Memory 3072 MB 1024 MB
Core Speed 772 MHz 800 MHz
Memory Speed 4008 MHz 5000 MHz
Power (Max TDP) 244 watts 200 watts
Bandwidth 192384 MB/sec 160000 MB/sec
Texel Rate 49408 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 512 1408
Texture Mapping Units 64 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: Bandwidth is the max amount of information (counted in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs 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 output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 580 3GB

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.

Comments

One Response to “GeForce GTX 580 3GB vs Radeon HD 6950”
Kmilo says:

Nice Comparisson but What about Physics, 3D Capabilities are those only from NVidia I would be nice to have the features table including al of these stuffs

Thanks

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