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GeForce GTX 480 vs Radeon HD 7970
Intro
The GeForce GTX 480 features clock speeds of 700 MHz on the GPU, and 924 MHz on the 1536 MB of GDDR5 RAM. It features 480 SPUs along with 60 TAUs and 48 ROPs.Compare all that to the Radeon HD 7970, which uses a 28 nm design. ATi has set the core frequency at 925 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this specific card. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.
Power Usage and Theoretical Benchmarks
Both cards have the same power consumption.Memory Bandwidth
Theoretically speaking, the Radeon HD 7970 will be 49% quicker than the GeForce GTX 480 in general, due to its higher bandwidth. (explain)
| Radeon HD 7970 |
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264000 MB/sec |
| GeForce GTX 480 |
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177408 MB/sec |
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Texel Rate
The Radeon HD 7970 should be a lot (approximately 182%) faster with regards to AF than the GeForce GTX 480. (explain)| Radeon HD 7970 |
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118400 Mtexels/sec |
| GeForce GTX 480 |
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42000 Mtexels/sec |
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Pixel Rate
The GeForce GTX 480 is a little bit (about 14%) more effective at full screen anti-aliasing than the Radeon HD 7970, and capable of handling higher resolutions more effectively. (explain)| GeForce GTX 480 |
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33600 Mpixels/sec |
| Radeon HD 7970 |
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29600 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
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
GeForce GTX 480Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 7970Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | GeForce GTX 480 | Radeon HD 7970 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | March 2010 | January 2012 |
| Code Name | GF100 | Tahiti XT |
| Fab Process | 40 nm | 28 nm |
| Bus | PCIe x16 | PCIe 3.0 x16 |
| Memory | 1536 MB | 3072 MB |
| Core Speed | 700 MHz | 925 MHz |
| Shader Speed | 1401 MHz | (N/A) MHz |
| Memory Speed | 924 MHz (3696 MHz effective) | 1375 MHz (5500 MHz effective) |
| Unified Shaders | 480 | 2048 |
| Texture Mapping Units | 60 | 128 |
| Render Output Units | 48 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 384-bit | 384-bit |
| DirectX Version | DirectX 11 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.2 |
| Power (Max TDP) | 250 watts | 250 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 177408 MB/sec | 264000 MB/sec |
| Texel Rate | 42000 Mtexels/sec | 118400 Mtexels/sec |
| Pixel Rate | 33600 Mpixels/sec | 29600 Mpixels/sec |
Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
Comments
One Response to “GeForce GTX 480 vs Radeon HD 7970”Realmente é uma vergonha para AMD, msm uma GTX 480 consegue le dar melhor FPS em jogos doque essa HD 7970, CxB para Gtx 480 extremo entre as 2..