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GeForce GTX 285 1GB vs Radeon HD 6770 1GB
Intro
The GeForce GTX 285 1GB comes with a clock frequency 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 features 240 SPUs, 80 TAUs, and 32 ROPs.Compare all that to the Radeon HD 6770 1GB, which has a clock speed of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is comprised of 800 SPUs, 40 TAUs, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6770 1GB |
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108 Watts |
| GeForce GTX 285 1GB |
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204 Watts |
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Memory Bandwidth
As far as performance goes, the GeForce GTX 285 1GB should theoretically be quite a bit superior to the Radeon HD 6770 1GB overall. (explain)
| GeForce GTX 285 1GB |
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158976 MB/sec |
| Radeon HD 6770 1GB |
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67200 MB/sec |
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Texel Rate
The GeForce GTX 285 1GB should be much (about 44%) faster with regards to texture filtering than the Radeon HD 6770 1GB. (explain)| GeForce GTX 285 1GB |
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51840 Mtexels/sec |
| Radeon HD 6770 1GB |
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36000 Mtexels/sec |
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Pixel Rate
The GeForce GTX 285 1GB is a lot (more or less 44%) more effective at FSAA than the Radeon HD 6770 1GB, and should be able to handle higher screen resolutions better. (explain)| GeForce GTX 285 1GB |
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20736 Mpixels/sec |
| Radeon HD 6770 1GB |
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14400 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 6770 1GBAmazon.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 6770 1GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | January 15, 2009 | January 2011 |
| Code Name | G200b | Juniper XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 648 MHz | 900 MHz |
| Memory Speed | 2484 MHz | 4200 MHz |
| Power (Max TDP) | 204 watts | 108 watts |
| Bandwidth | 158976 MB/sec | 67200 MB/sec |
| Texel Rate | 51840 Mtexels/sec | 36000 Mtexels/sec |
| Pixel Rate | 20736 Mpixels/sec | 14400 Mpixels/sec |
| Unified Shaders | 240 | 800 |
| Texture Mapping Units | 80 | 40 |
| Render Output Units | 32 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 512-bit | 128-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 1400 million | 1040 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 maximum amount of information (counted in MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 processed per second. This is worked out by multiplying the total texture units of the card 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 per second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.
GeForce GTX 285 1GBAmazon.com
Check prices at:
|
Radeon HD 6770 1GBAmazon.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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