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GeForce GTX 285 1GB vs GeForce GTX 285 2GB
Intro
The GeForce GTX 285 1GB uses a 55 nm design. nVidia has clocked the core speed at 648 MHz. The GDDR3 memory is set to run at a frequency of 1242 MHz on this particular card. It features 240 SPUs along with 80 Texture Address Units and 32 ROPs.Compare those specs to the GeForce GTX 285 2GB, which comes with GPU core speed of 648 MHz, and 2048 MB of GDDR3 memory set to run at 1242 MHz through a 512-bit bus. It also is comprised of 240 Stream Processors, 80 Texture Address Units, and 32 ROPs.
Power Usage and Theoretical Benchmarks
Both cards have the same power consumption.Memory Bandwidth
Both cards have exactly the same bandwidth, so in theory they should perform exactly the same. (explain)
Texel Rate
Both cards have exactly the same texel rate, so theoretically they should perform equally good at at anisotropic filtering. (explain)Pixel Rate
Both cards have exactly the same pixel fill rate, so theoretically they should be equally good at at full screen anti-aliasing, and be capable of handling the same screen resolutions. (explain)
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
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GeForce GTX 285 2GBAmazon.com
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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 | GeForce GTX 285 2GB |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | January 15, 2009 | January 15, 2009 |
| Code Name | G200b | G200b |
| Memory | 1024 MB | 2048 MB |
| Core Speed | 648 MHz | 648 MHz |
| Memory Speed | 2484 MHz | 2484 MHz |
| Power (Max TDP) | 204 watts | 204 watts |
| Bandwidth | 158976 MB/sec | 158976 MB/sec |
| Texel Rate | 51840 Mtexels/sec | 51840 Mtexels/sec |
| Pixel Rate | 20736 Mpixels/sec | 20736 Mpixels/sec |
| Unified Shaders | 240 | 240 |
| Texture Mapping Units | 80 | 80 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR3 | GDDR3 |
| Bus Width | 512-bit | 512-bit |
| Fab Process | 55 nm | 55 nm |
| Transistors | 1400 million | 1400 million |
| Bus | PCIe x16 2.0 | PCIe x16 2.0 |
| DirectX Version | DirectX 10 | DirectX 10 |
| OpenGL Version | OpenGL 3.1 | OpenGL 3.1 |
Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, 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 most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to 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 max fill rate.
GeForce GTX 285 1GBAmazon.com
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GeForce GTX 285 2GBAmazon.com
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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.
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Comments
2 Responses to “GeForce GTX 285 1GB vs GeForce GTX 285 2GB”thin compare result shoes that shit on your site because one gig more of memory nowhere does have effect
1GB of memory to 2gb of memory has a massive effect.
2GB to 3GB has little effect unless you're playing above 1080p, but is good for certain games.
And 3gb to 4gb doesn't matter at all at 1080p, makes a large difference at 2160p(4k)