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GeForce GTX 460 1GB vs Radeon HD 4790
Intro
The GeForce GTX 460 1GB features a clock frequency of 675 MHz and a GDDR5 memory frequency of 900 MHz. It also uses a 256-bit bus, and makes use of a 40 nm design. It features 336 SPUs, 56 Texture Address Units, and 32 ROPs.Compare that to the Radeon HD 4790, which features a core clock speed of 600 MHz and a GDDR5 memory speed of 800 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
Theoretically speaking, the GeForce GTX 460 1GB should perform a bit faster than the Radeon HD 4790 overall. (explain)
| GeForce GTX 460 1GB |
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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 1GB will be much (approximately 97%) more effective at AF than the Radeon HD 4790. (explain)| GeForce GTX 460 1GB |
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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 1GB is much (more or less 125%) better at FSAA than the Radeon HD 4790, and should be capable of handling higher screen resolutions without losing too much performance. (explain)| GeForce GTX 460 1GB |
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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 1GBAmazon.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 1GB | Radeon HD 4790 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | July 2010 | 2009 |
| Code Name | GF104 | RV790 |
| Memory | 1024 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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the 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 that the graphics chip could possibly write to the local memory per 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 - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.
GeForce GTX 460 1GBAmazon.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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