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GeForce GTX 295 vs Geforce GTX 680
Intro
The GeForce GTX 295 features a core clock speed of 576 MHz and a GDDR3 memory speed of 999 MHz. It also uses a 448-bit bus, and uses a 55 nm design. It is comprised of 240 SPUs, 80 TAUs, and 28 ROPs.Compare all that to the Geforce GTX 680, which comes with a clock speed of 1006 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Geforce GTX 680 |
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195 Watts |
| GeForce GTX 295 |
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289 Watts |
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Memory Bandwidth
In theory, the GeForce GTX 295 will be 16% faster than the Geforce GTX 680 overall, because of its greater data rate. (explain)
| GeForce GTX 295 |
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223776 MB/sec |
| Geforce GTX 680 |
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192256 MB/sec |
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Texel Rate
The Geforce GTX 680 will be much (about 40%) better at AF than the GeForce GTX 295. (explain)| Geforce GTX 680 |
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128768 Mtexels/sec |
| GeForce GTX 295 |
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92160 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the GeForce GTX 295 is the winner, but it probably won't make a huge difference. (explain)| GeForce GTX 295 |
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32256 Mpixels/sec |
| Geforce GTX 680 |
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32192 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.
One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.
Price Comparison
GeForce GTX 295Amazon.com
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Geforce GTX 680Amazon.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 295 | Geforce GTX 680 |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | January 8, 2009 | March 2012 |
| Code Name | G200b | GK104 |
| Fab Process | 55 nm | 28 nm |
| Bus | PCIe x16 2.0 | PCIe 3.0 x16 |
| Memory | 896 MB (x2) | 2048 MB |
| Core Speed | 576 MHz (x2) | 1006 MHz |
| Shader Speed | 1242 MHz (x2) | 1006 MHz |
| Memory Speed | 999 MHz (1998 MHz effective) (x2) | 1502 MHz (6008 MHz effective) |
| Unified Shaders | 240 (x2) | 1536 |
| Texture Mapping Units | 80 (x2) | 128 |
| Render Output Units | 28 (x2) | 32 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 448-bit (x2) | 256-bit |
| DirectX Version | DirectX 10 | DirectX 11.0 |
| OpenGL Version | OpenGL 3.1 | OpenGL 4.2 |
| Power (Max TDP) | 289 watts | 195 watts |
| Shader Model | 4.0 | 5.0 |
| Bandwidth | 223776 MB/sec | 192256 MB/sec |
| Texel Rate | 92160 Mtexels/sec | 128768 Mtexels/sec |
| Pixel Rate | 32256 Mpixels/sec | 32192 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units by the core 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 in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.
Comments
6 Responses to “GeForce GTX 295 vs Geforce GTX 680”Also it comes quite close to the GTX 680's general performance in high resolutions. But keep in mind, that a 680 is a single graphic chip, that needs less power and has the overall way better performance than an older GTX 295.
Theoretical BS.
here is realworld results:
http://www.evga.com/forums/tm.aspx?m=1519228
in general until 2015-2016 would be really good....then you will be able to buy from series : 9xx and 10xx...