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GeForce GTX 460 (OEM) vs Radeon HD 4890 2GB
Intro
The GeForce GTX 460 (OEM) has core speeds of 650 MHz on the GPU, and 850 MHz on the 1024 MB of GDDR5 RAM. It features 336 SPUs along with 56 TAUs and 32 ROPs.Compare all that to the Radeon HD 4890 2GB, which uses a 55 nm design. ATi has set the core speed at 1000 MHz. The GDDR5 RAM is set to run at a speed of 975 MHz on this card. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GTX 460 (OEM) |
|
150 Watts |
| Radeon HD 4890 2GB |
|
190 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 4890 2GB should in theory be a bit superior to the GeForce GTX 460 (OEM) in general. (explain)
| Radeon HD 4890 2GB |
|
124800 MB/sec |
| GeForce GTX 460 (OEM) |
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108800 MB/sec |
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Texel Rate
The Radeon HD 4890 2GB is a little bit (more or less 10%) more effective at AF than the GeForce GTX 460 (OEM). (explain)| Radeon HD 4890 2GB |
|
40000 Mtexels/sec |
| GeForce GTX 460 (OEM) |
|
36400 Mtexels/sec |
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Pixel Rate
If running with lots of anti-aliasing is important to you, then the GeForce GTX 460 (OEM) is superior to the Radeon HD 4890 2GB, by a large margin. (explain)| GeForce GTX 460 (OEM) |
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20800 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
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 460 (OEM)Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 4890 2GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | GeForce GTX 460 (OEM) | Radeon HD 4890 2GB |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | October 2010 | Apr 2, 2009 |
| Code Name | GF104 | RV790 XT |
| Fab Process | 40 nm | 55 nm |
| Bus | PCIe x16 | PCIe 2.0 x16 |
| Memory | 1024 MB | 2048 MB |
| Core Speed | 650 MHz | 1000 MHz |
| Shader Speed | 1300 MHz | (N/A) MHz |
| Memory Speed | 850 MHz | 975 MHz |
| 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 |
| DirectX Version | DirectX 11 | DirectX 10.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 3.0 |
| Power (Max TDP) | 150 watts | 190 watts |
| Shader Model | 5.0 | 4.1 |
| Bandwidth | 108800 MB/sec | 124800 MB/sec |
| Texel Rate | 36400 Mtexels/sec | 40000 Mtexels/sec |
| Pixel Rate | 20800 Mpixels/sec | 16000 Mpixels/sec |
Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This 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 in a second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its 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 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.
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