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GeForce GTX 580 3GB vs Radeon HD 7950 3GB
Intro
The GeForce GTX 580 3GB features a clock frequency of 772 MHz and a GDDR5 memory speed of 1002 MHz. It also makes use of a 384-bit memory bus, and makes use of a 40 nm design. It features 512 SPUs, 64 Texture Address Units, and 48 Raster Operation Units.Compare all that to the Radeon HD 7950 3GB, which features GPU clock speed of 800 MHz, and 3072 MB of GDDR5 RAM set to run at 1250 MHz through a 384-bit bus. It also is made up of 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7950 3GB |
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200 Watts |
| GeForce GTX 580 3GB |
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244 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 7950 3GB should theoretically be quite a bit superior to the GeForce GTX 580 3GB in general. (explain)
| Radeon HD 7950 3GB |
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240000 MB/sec |
| GeForce GTX 580 3GB |
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192384 MB/sec |
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Texel Rate
The Radeon HD 7950 3GB will be a lot (more or less 81%) more effective at anisotropic filtering than the GeForce GTX 580 3GB. (explain)| Radeon HD 7950 3GB |
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89600 Mtexels/sec |
| GeForce GTX 580 3GB |
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49408 Mtexels/sec |
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Pixel Rate
The GeForce GTX 580 3GB is much (about 45%) more effective at AA than the Radeon HD 7950 3GB, and able to handle higher screen resolutions better. (explain)| GeForce GTX 580 3GB |
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37056 Mpixels/sec |
| Radeon HD 7950 3GB |
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25600 Mpixels/sec |
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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
GeForce GTX 580 3GBAmazon.com
Check prices at:
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Radeon HD 7950 3GBAmazon.com
Check prices at:
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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
| Model | GeForce GTX 580 3GB | Radeon HD 7950 3GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | November 2010 | January 2012 |
| Code Name | GF110 | Tahiti Pro |
| Memory | 3072 MB | 3072 MB |
| Core Speed | 772 MHz | 800 MHz |
| Memory Speed | 4008 MHz | 5000 MHz |
| Power (Max TDP) | 244 watts | 200 watts |
| Bandwidth | 192384 MB/sec | 240000 MB/sec |
| Texel Rate | 49408 Mtexels/sec | 89600 Mtexels/sec |
| Pixel Rate | 37056 Mpixels/sec | 25600 Mpixels/sec |
| Unified Shaders | 512 | 1792 |
| Texture Mapping Units | 64 | 112 |
| Render Output Units | 48 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 384-bit | 384-bit |
| Fab Process | 40 nm | 28 nm |
| Transistors | 3000 million | 4313 million |
| Bus | PCIe x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 11 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.2 |
Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.
GeForce GTX 580 3GBAmazon.com
Check prices at:
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Radeon HD 7950 3GBAmazon.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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