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GeForce GTX 470 vs Radeon HD 4890 2GB
Intro
The GeForce GTX 470 makes use of a 40 nm design. nVidia has clocked the core speed at 607 MHz. The GDDR5 RAM is set to run at a frequency of 837 MHz on this specific model. It features 448 SPUs along with 56 TAUs and 40 Rasterization Operator Units.Compare all that to the Radeon HD 4890 2GB, which features a clock frequency of 1000 MHz and a GDDR5 memory frequency of 975 MHz. It also features a 256-bit bus, and makes use of a 55 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4890 2GB |
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190 Watts |
| GeForce GTX 470 |
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215 Watts |
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Memory Bandwidth
Theoretically speaking, the GeForce GTX 470 should perform a small bit faster than the Radeon HD 4890 2GB in general. (explain)
| GeForce GTX 470 |
|
133920 MB/sec |
| Radeon HD 4890 2GB |
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124800 MB/sec |
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Texel Rate
The Radeon HD 4890 2GB will be a small bit (about 18%) faster with regards to AF than the GeForce GTX 470. (explain)| Radeon HD 4890 2GB |
|
40000 Mtexels/sec |
| GeForce GTX 470 |
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33992 Mtexels/sec |
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Pixel Rate
The GeForce GTX 470 is quite a bit (more or less 52%) faster with regards to full screen anti-aliasing than the Radeon HD 4890 2GB, and should be capable of handling higher screen resolutions more effectively. (explain)| GeForce GTX 470 |
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24280 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 470Amazon.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 470 | Radeon HD 4890 2GB |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | March 2010 | Apr 2, 2009 |
| Code Name | GF100 | RV790 XT |
| Fab Process | 40 nm | 55 nm |
| Bus | PCIe x16 | PCIe 2.0 x16 |
| Memory | 1280 MB | 2048 MB |
| Core Speed | 607 MHz | 1000 MHz |
| Shader Speed | 1215 MHz | (N/A) MHz |
| Memory Speed | 837 MHz | 975 MHz |
| Unified Shaders | 448 | 800(160x5) |
| Texture Mapping Units | 56 | 40 |
| Render Output Units | 40 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 320-bit | 256-bit |
| DirectX Version | DirectX 11 | DirectX 10.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 3.0 |
| Power (Max TDP) | 215 watts | 190 watts |
| Shader Model | 5.0 | 4.1 |
| Bandwidth | 133920 MB/sec | 124800 MB/sec |
| Texel Rate | 33992 Mtexels/sec | 40000 Mtexels/sec |
| Pixel Rate | 24280 Mpixels/sec | 16000 Mpixels/sec |
Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must 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 anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.
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