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GeForce GTX 285 1GB vs Radeon HD 6850
Intro
The GeForce GTX 285 1GB features core clock speeds of 648 MHz on the GPU, and 1242 MHz on the 1024 MB of GDDR3 RAM. It features 240 SPUs along with 80 TAUs and 32 ROPs.Compare those specs to the Radeon HD 6850, which comes with GPU core speed of 775 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 256-bit bus. It also is made up of 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
In theory, the GeForce GTX 285 1GB should be 24% quicker than the Radeon HD 6850 overall, due to its greater data rate. (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 a lot (more or less 39%) more effective at AF 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
The Radeon HD 6850 will be a little bit (about 20%) faster with regards to anti-aliasing than the GeForce GTX 285 1GB, and will be capable of handling higher resolutions more effectively. (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 transported across the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 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.
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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