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GeForce GTX 460 2GB vs Radeon HD 4790
Intro
The GeForce GTX 460 2GB makes use of a 40 nm design. nVidia has set the core frequency at 675 MHz. The GDDR5 RAM works at a frequency of 900 MHz on this particular model. It features 336 SPUs as well as 56 Texture Address Units and 32 Rasterization Operator Units.Compare that to the Radeon HD 4790, which features core speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs along with 32 TAUs and 16 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
Performance-wise, the GeForce GTX 460 2GB should in theory be just a bit superior to the Radeon HD 4790 in general. (explain)
| GeForce GTX 460 2GB |
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115200 MB/sec |
| Radeon HD 4790 |
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102400 MB/sec |
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Texel Rate
The GeForce GTX 460 2GB is quite a bit (more or less 97%) faster with regards to texture filtering than the Radeon HD 4790. (explain)| GeForce GTX 460 2GB |
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37800 Mtexels/sec |
| Radeon HD 4790 |
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19200 Mtexels/sec |
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Pixel Rate
The GeForce GTX 460 2GB should be a lot (approximately 125%) faster with regards to AA than the Radeon HD 4790, and should be able to handle higher screen resolutions more effectively. (explain)| GeForce GTX 460 2GB |
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21600 Mpixels/sec |
| Radeon HD 4790 |
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9600 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 460 2GBAmazon.com
Check prices at:
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Radeon HD 4790Amazon.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 460 2GB | Radeon HD 4790 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | July 2010 | 2009 |
| Code Name | GF104 | RV790 |
| Memory | 2048 MB | 512 MB |
| Core Speed | 675 MHz | 600 MHz |
| Memory Speed | 3600 MHz | 3200 MHz |
| Power (Max TDP) | 160 watts | (Unknown) watts |
| Bandwidth | 115200 MB/sec | 102400 MB/sec |
| Texel Rate | 37800 Mtexels/sec | 19200 Mtexels/sec |
| Pixel Rate | 21600 Mpixels/sec | 9600 Mpixels/sec |
| Unified Shaders | 336 | 640(128x5) |
| Texture Mapping Units | 56 | 32 |
| Render Output Units | 32 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 40 nm | 55 nm |
| Transistors | 1950 million | 959 million |
| Bus | PCIe x16 | PCIe 2.0 x16 |
| DirectX Version | DirectX 11 | DirectX 10.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 3.0 |
Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per 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 card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.
GeForce GTX 460 2GBAmazon.com
Check prices at:
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Radeon HD 4790Amazon.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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