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GeForce GTX 285 1GB vs Radeon HD 6770 1GB
Intro
The GeForce GTX 285 1GB uses a 55 nm design. nVidia has set the core frequency at 648 MHz. The GDDR3 RAM works at a frequency of 1242 MHz on this card. It features 240 SPUs along with 80 Texture Address Units and 32 ROPs.Compare that to the Radeon HD 6770 1GB, which comes with clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs as well as 40 Texture Address Units 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
Theoretically speaking, the GeForce GTX 285 1GB will be 137% quicker than the Radeon HD 6770 1GB overall, due to its greater bandwidth. (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 is much (approximately 44%) more effective at anisotropic 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
If using a high screen resolution is important to you, then the GeForce GTX 285 1GB is the winner, and very much so. (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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 get to the maximum 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.
|
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