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GeForce GTX 650 vs GeForce GTX 660 Ti
Intro
The GeForce GTX 650 comes with a GPU clock speed of 1058 MHz, and the 2048 MB of GDDR5 memory runs at 1250 MHz through a 128-bit bus. It also features 384 SPUs, 32 TAUs, and 16 Raster Operation Units.Compare all of that to the GeForce GTX 660 Ti, which has a clock frequency of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 192-bit memory bus, and makes use of a 28 nm design. It features 1344 SPUs, 112 TAUs, and 24 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GTX 650 |
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64 Watts |
| GeForce GTX 660 Ti |
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150 Watts |
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Memory Bandwidth
The GeForce GTX 660 Ti should theoretically be a lot faster than the GeForce GTX 650 in general. (explain)
| GeForce GTX 660 Ti |
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144000 MB/sec |
| GeForce GTX 650 |
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80000 MB/sec |
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Texel Rate
The GeForce GTX 660 Ti should be quite a bit (approximately 203%) faster with regards to anisotropic filtering than the GeForce GTX 650. (explain)| GeForce GTX 660 Ti |
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102480 Mtexels/sec |
| GeForce GTX 650 |
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33856 Mtexels/sec |
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Pixel Rate
If using a high screen resolution is important to you, then the GeForce GTX 660 Ti is superior to the GeForce GTX 650, by far. (explain)| GeForce GTX 660 Ti |
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21960 Mpixels/sec |
| GeForce GTX 650 |
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16928 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
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
GeForce GTX 650Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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GeForce GTX 660 TiAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | GeForce GTX 650 | GeForce GTX 660 Ti |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | September 2012 | August 2012 |
| Code Name | GK107 | GK104 |
| Fab Process | 28 nm | 28 nm |
| Bus | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Memory | 2048 MB | 2048 MB |
| Core Speed | 1058 MHz | 915 MHz |
| Shader Speed | 1058 MHz | 915 MHz |
| Memory Speed | 1250 MHz (5000 MHz effective) | 1500 MHz (6000 MHz effective) |
| Unified Shaders | 384 | 1344 |
| Texture Mapping Units | 32 | 112 |
| Render Output Units | 16 | 24 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 192-bit |
| DirectX Version | DirectX 11.1 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.3 | OpenGL 4.3 |
| Power (Max TDP) | 64 watts | 150 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 80000 MB/sec | 144000 MB/sec |
| Texel Rate | 33856 Mtexels/sec | 102480 Mtexels/sec |
| Pixel Rate | 16928 Mpixels/sec | 21960 Mpixels/sec |
Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's 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 can be applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write 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 the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.
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