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GeForce GTX 460 2GB vs Radeon HD 4890 2GB
Intro
The GeForce GTX 460 2GB uses a 40 nm design. nVidia has set the core speed at 675 MHz. The GDDR5 memory works at a frequency of 900 MHz on this particular model. It features 336 SPUs along with 56 TAUs and 32 Rasterization Operator Units.Compare those specifications to the Radeon HD 4890 2GB, which features a GPU core clock speed of 1000 MHz, and 2048 MB of GDDR5 memory running at 975 MHz through a 256-bit bus. It also is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GTX 460 2GB |
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160 Watts |
| Radeon HD 4890 2GB |
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190 Watts |
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Memory Bandwidth
Performance-wise, the Radeon HD 4890 2GB should in theory be just a bit superior to the GeForce GTX 460 2GB in general. (explain)
| Radeon HD 4890 2GB |
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124800 MB/sec |
| GeForce GTX 460 2GB |
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115200 MB/sec |
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Texel Rate
The Radeon HD 4890 2GB will be a bit (more or less 6%) better at AF than the GeForce GTX 460 2GB. (explain)| Radeon HD 4890 2GB |
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40000 Mtexels/sec |
| GeForce GTX 460 2GB |
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37800 Mtexels/sec |
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Pixel Rate
The GeForce GTX 460 2GB will be quite a bit (approximately 35%) more effective at AA than the Radeon HD 4890 2GB, and also will be capable of handling higher resolutions without slowing down too much. (explain)| GeForce GTX 460 2GB |
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21600 Mpixels/sec |
| Radeon HD 4890 2GB |
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16000 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 4890 2GBAmazon.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 4890 2GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | July 2010 | Apr 2, 2009 |
| Code Name | GF104 | RV790 XT |
| Memory | 2048 MB | 2048 MB |
| Core Speed | 675 MHz | 1000 MHz |
| Memory Speed | 3600 MHz | 3900 MHz |
| Power (Max TDP) | 160 watts | 190 watts |
| Bandwidth | 115200 MB/sec | 124800 MB/sec |
| Texel Rate | 37800 Mtexels/sec | 40000 Mtexels/sec |
| Pixel Rate | 21600 Mpixels/sec | 16000 Mpixels/sec |
| Unified Shaders | 336 | 800(160x5) |
| Texture Mapping Units | 56 | 40 |
| 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 max amount of data (in units of 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. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated 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 per second.
Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.
GeForce GTX 460 2GBAmazon.com
Check prices at:
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Radeon HD 4890 2GBAmazon.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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