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GeForce GTX 285 2GB vs Radeon HD 6790
Intro
The GeForce GTX 285 2GB has a clock frequency of 648 MHz and a GDDR3 memory frequency of 1242 MHz. It also makes use of a 512-bit bus, and uses a 55 nm design. It is comprised of 240 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.Compare those specifications to the Radeon HD 6790, which features core speeds of 840 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6790 |
|
150 Watts |
| GeForce GTX 285 2GB |
|
204 Watts |
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Memory Bandwidth
Performance-wise, the GeForce GTX 285 2GB should in theory be just a bit better than the Radeon HD 6790 in general. (explain)
| GeForce GTX 285 2GB |
|
158976 MB/sec |
| Radeon HD 6790 |
|
134400 MB/sec |
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Texel Rate
The GeForce GTX 285 2GB will be quite a bit (more or less 54%) more effective at texture filtering than the Radeon HD 6790. (explain)| GeForce GTX 285 2GB |
|
51840 Mtexels/sec |
| Radeon HD 6790 |
|
33600 Mtexels/sec |
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Pixel Rate
The GeForce GTX 285 2GB should be a lot (more or less 54%) better at FSAA than the Radeon HD 6790, and capable of handling higher resolutions without losing too much performance. (explain)| GeForce GTX 285 2GB |
|
20736 Mpixels/sec |
| Radeon HD 6790 |
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13440 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 285 2GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 6790Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | GeForce GTX 285 2GB | Radeon HD 6790 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | January 15, 2009 | April 2011 |
| Code Name | G200b | Barts LE |
| Fab Process | 55 nm | 40 nm |
| Bus | PCIe x16 2.0 | PCIe 2.1 x16 |
| Memory | 2048 MB | 1024 MB |
| Core Speed | 648 MHz | 840 MHz |
| Shader Speed | 1476 MHz | (N/A) MHz |
| Memory Speed | 1242 MHz | 1050 MHz |
| Unified Shaders | 240 | 800 |
| Texture Mapping Units | 80 | 40 |
| Render Output Units | 32 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 512-bit | 256-bit |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.1 | OpenGL 4.1 |
| Power (Max TDP) | 204 watts | 150 watts |
| Shader Model | 4.0 | 5.0 |
| Bandwidth | 158976 MB/sec | 134400 MB/sec |
| Texel Rate | 51840 Mtexels/sec | 33600 Mtexels/sec |
| Pixel Rate | 20736 Mpixels/sec | 13440 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.
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