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GeForce GTX 285 1GB vs Radeon HD 5770
Intro
The GeForce GTX 285 1GB uses a 55 nm design. nVidia has set the core speed at 648 MHz. The GDDR3 memory works at a speed of 1242 MHz on this card. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.Compare all that to the Radeon HD 5770, which has a GPU core clock speed of 850 MHz, and 1024 MB of GDDR5 memory running at 1200 MHz through a 128-bit bus. It also is made up of 800(160x5) Stream Processors, 40 TAUs, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5770 |
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108 Watts |
| GeForce GTX 285 1GB |
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204 Watts |
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Memory Bandwidth
In theory, the GeForce GTX 285 1GB will be 107% quicker than the Radeon HD 5770 in general, due to its greater bandwidth. (explain)
| GeForce GTX 285 1GB |
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158976 MB/sec |
| Radeon HD 5770 |
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76800 MB/sec |
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Texel Rate
The GeForce GTX 285 1GB is a lot (about 52%) better at texture filtering than the Radeon HD 5770. (explain)| GeForce GTX 285 1GB |
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51840 Mtexels/sec |
| Radeon HD 5770 |
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34000 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the GeForce GTX 285 1GB is a better choice, and very much so. (explain)| GeForce GTX 285 1GB |
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20736 Mpixels/sec |
| Radeon HD 5770 |
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13600 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 5770Amazon.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 5770 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | January 15, 2009 | October 13, 2009 |
| Code Name | G200b | Juniper XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 648 MHz | 850 MHz |
| Memory Speed | 2484 MHz | 4800 MHz |
| Power (Max TDP) | 204 watts | 108 watts |
| Bandwidth | 158976 MB/sec | 76800 MB/sec |
| Texel Rate | 51840 Mtexels/sec | 34000 Mtexels/sec |
| Pixel Rate | 20736 Mpixels/sec | 13600 Mpixels/sec |
| Unified Shaders | 240 | 800(160x5) |
| 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 2.1 x16 |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.1 | OpenGL 3.2 |
Memory Bandwidth: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
GeForce GTX 285 1GBAmazon.com
Check prices at:
|
Radeon HD 5770Amazon.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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