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GeForce GTX 460 vs Radeon HD 3870 1GB
Intro
The GeForce GTX 460 uses a 40 nm design. nVidia has clocked the core speed at 675 MHz. The GDDR5 RAM is set to run at a frequency of 900 MHz on this card. It features 336 SPUs along with 56 TAUs and 24 ROPs.Compare that to the Radeon HD 3870 1GB, which has a GPU core clock speed of 775 MHz, and 1024 MB of GDDR4 RAM running at 1125 MHz through a 256-bit bus. It also is made up of 320(64x5) Stream Processors, 16 TAUs, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 3870 1GB |
|
106 Watts |
| GeForce GTX 460 |
|
150 Watts |
|
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Memory Bandwidth
The GeForce GTX 460, in theory, should be a little bit faster than the Radeon HD 3870 1GB in general. (explain)
| GeForce GTX 460 |
|
86400 MB/sec |
| Radeon HD 3870 1GB |
|
72000 MB/sec |
|
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Texel Rate
The GeForce GTX 460 is much (about 205%) more effective at AF than the Radeon HD 3870 1GB. (explain)| GeForce GTX 460 |
|
37800 Mtexels/sec |
| Radeon HD 3870 1GB |
|
12400 Mtexels/sec |
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Pixel Rate
The GeForce GTX 460 is a lot (about 31%) faster with regards to full screen anti-aliasing than the Radeon HD 3870 1GB, and also capable of handling higher resolutions better. (explain)| GeForce GTX 460 |
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16200 Mpixels/sec |
| Radeon HD 3870 1GB |
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12400 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
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
GeForce GTX 460Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Radeon HD 3870 1GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Specifications
| Model | GeForce GTX 460 | Radeon HD 3870 1GB |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | July 2010 | Nov 19, 2007 |
| Code Name | GF104 | RV670 XT |
| Fab Process | 40 nm | 55 nm |
| Bus | PCIe x16 | PCIe 2.0 x16/AGP 8x |
| Memory | 768 MB | 1024 MB |
| Core Speed | 675 MHz | 775 MHz |
| Shader Speed | 1350 MHz | (N/A) MHz |
| Memory Speed | 900 MHz | 1125 MHz |
| Unified Shaders | 336 | 320(64x5) |
| Texture Mapping Units | 56 | 16 |
| Render Output Units | 24 | 16 |
| Bus Type | GDDR5 | GDDR4 |
| Bus Width | 192-bit | 256-bit |
| DirectX Version | DirectX 11 | DirectX 10.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 3.0 |
| Power (Max TDP) | 150 watts | 106 watts |
| Shader Model | 5.0 | 4.1 |
| Bandwidth | 86400 MB/sec | 72000 MB/sec |
| Texel Rate | 37800 Mtexels/sec | 12400 Mtexels/sec |
| Pixel Rate | 16200 Mpixels/sec | 12400 Mpixels/sec |
Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, 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 most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.
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