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GeForce GTX 285 1GB vs Radeon HD 6850
Intro
The GeForce GTX 285 1GB comes with a core clock speed of 648 MHz and a GDDR3 memory frequency of 1242 MHz. It also features a 512-bit memory bus, and uses a 55 nm design. It is comprised of 240 SPUs, 80 TAUs, and 32 Raster Operation Units.Compare those specifications to the Radeon HD 6850, which has a GPU core clock speed of 775 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 256-bit bus. It also features 960 Stream Processors, 48 Texture Address Units, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6850 |
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127 Watts |
| GeForce GTX 285 1GB |
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204 Watts |
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Memory Bandwidth
Theoretically speaking, the GeForce GTX 285 1GB should be a lot faster than the Radeon HD 6850 in general. (explain)
| GeForce GTX 285 1GB |
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158976 MB/sec |
| Radeon HD 6850 |
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128000 MB/sec |
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Texel Rate
The GeForce GTX 285 1GB is much (more or less 39%) more effective at anisotropic filtering than the Radeon HD 6850. (explain)| GeForce GTX 285 1GB |
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51840 Mtexels/sec |
| Radeon HD 6850 |
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37200 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Radeon HD 6850 is superior to the GeForce GTX 285 1GB, though not by far. (explain)| Radeon HD 6850 |
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24800 Mpixels/sec |
| GeForce GTX 285 1GB |
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20736 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 285 1GBAmazon.com
Check prices at:
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Radeon HD 6850Amazon.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 285 1GB | Radeon HD 6850 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | January 15, 2009 | October 2010 |
| Code Name | G200b | Barts Pro |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 648 MHz | 775 MHz |
| Memory Speed | 2484 MHz | 4000 MHz |
| Power (Max TDP) | 204 watts | 127 watts |
| Bandwidth | 158976 MB/sec | 128000 MB/sec |
| Texel Rate | 51840 Mtexels/sec | 37200 Mtexels/sec |
| Pixel Rate | 20736 Mpixels/sec | 24800 Mpixels/sec |
| Unified Shaders | 240 | 960 |
| Texture Mapping Units | 80 | 48 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 512-bit | 256-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 1400 million | 1700 million |
| Bus | PCIe x16 2.0 | PCIe x16 |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.1 | OpenGL 4.1 |
Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at 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 could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.
GeForce GTX 285 1GBAmazon.com
Check prices at:
|
Radeon HD 6850Amazon.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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