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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 RAM is set to run at 1002 MHz through a 384-bit bus. It also is comprised of 512 SPUs, 64 TAUs, and 48 ROPs.

Compare all of that to the Radeon HD 6950, which makes use of a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this specific card. It features 1408 SPUs as well as 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 580 3GB 244 Watts
Difference: 44 Watts (22%)

Memory Bandwidth

Performance-wise, the GeForce GTX 580 3GB should in theory be a bit better than the Radeon HD 6950 overall. (explain)

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

Texel Rate

The Radeon HD 6950 will be much (about 42%) more effective 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

The GeForce GTX 580 3GB should be quite a bit (approximately 45%) more effective at FSAA than the Radeon HD 6950, and also will be able to handle higher resolutions better. (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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the 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 could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core 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 also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential 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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