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GeForce GTX 460 2GB vs Radeon HD 4790
Intro
The GeForce GTX 460 2GB uses a 40 nm design. nVidia has clocked the core speed at 675 MHz. The GDDR5 memory works at a frequency of 900 MHz on this particular card. It features 336 SPUs along with 56 Texture Address Units and 32 Rasterization Operator Units.Compare all that to the Radeon HD 4790, which has core speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs along with 32 TAUs and 16 ROPs.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
The GeForce GTX 460 2GB, in theory, should perform just a bit faster than the Radeon HD 4790 overall. (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 should be a lot (more or less 97%) faster with regards to anisotropic 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 will be much (about 125%) more effective at full screen anti-aliasing than the Radeon HD 4790, and able to handle higher 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 (measured in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen 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 clock speed of the chip. The higher this number, the better the card will be at handling 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 that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max 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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