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GeForce GTX 285 1GB vs Radeon HD 6850
Intro
The GeForce GTX 285 1GB features a core clock speed of 648 MHz and a GDDR3 memory frequency of 1242 MHz. It also uses a 512-bit memory bus, and uses a 55 nm design. It is comprised of 240 SPUs, 80 Texture Address Units, and 32 ROPs.Compare those specs to the Radeon HD 6850, which has clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 960 SPUs along with 48 Texture Address Units and 32 ROPs.
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 will be 24% quicker than the Radeon HD 6850 overall, because of its higher data rate. (explain)
| GeForce GTX 285 1GB |
|
158976 MB/sec |
| Radeon HD 6850 |
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128000 MB/sec |
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Texel Rate
The GeForce GTX 285 1GB will be a lot (approximately 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 is a little bit (approximately 20%) better at anti-aliasing than the GeForce GTX 285 1GB, and also able to handle higher screen resolutions better. (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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock 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 - the lower the memory bandwidth is, the lower the potential 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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