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GeForce GTX 460 1GB vs Radeon HD 4890 1GB
Intro
The GeForce GTX 460 1GB has a core clock frequency of 675 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It features 336 SPUs, 56 TAUs, and 32 ROPs.Compare those specifications to the Radeon HD 4890 1GB, which features core clock speeds of 1000 MHz on the GPU, and 975 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GTX 460 1GB |
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160 Watts |
| Radeon HD 4890 1GB |
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190 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 4890 1GB should in theory be a bit superior to the GeForce GTX 460 1GB in general. (explain)
| Radeon HD 4890 1GB |
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124800 MB/sec |
| GeForce GTX 460 1GB |
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115200 MB/sec |
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Texel Rate
The Radeon HD 4890 1GB will be a little bit (about 6%) more effective at texture filtering than the GeForce GTX 460 1GB. (explain)| Radeon HD 4890 1GB |
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40000 Mtexels/sec |
| GeForce GTX 460 1GB |
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37800 Mtexels/sec |
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Pixel Rate
The GeForce GTX 460 1GB will be a lot (more or less 35%) better at anti-aliasing than the Radeon HD 4890 1GB, and should be capable of handling higher resolutions while still performing well. (explain)| GeForce GTX 460 1GB |
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21600 Mpixels/sec |
| Radeon HD 4890 1GB |
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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 1GBAmazon.com
Check prices at:
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Radeon HD 4890 1GBAmazon.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 4890 1GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | July 2010 | Apr 2, 2009 |
| Code Name | GF104 | RV790 XT |
| Memory | 1024 MB | 1024 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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video 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 amount of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.
GeForce GTX 460 1GBAmazon.com
Check prices at:
|
Radeon HD 4890 1GBAmazon.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.
|
Comments
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