The card comes with a very efficient cooling system that, despite the high factory overclock and the even higher boost option, doesn’t let the GPU go too far beyond the 62 degrees Celsius mark that is rarely reached. The reason for such a “modest” automatic overclocking may be the fact that the card was getting too close to the GTX 660 Ti performance level. The manufacturer could have clocked the GK106 GPU even higher than the GK104 that’s inside their GTX 660 Ti Direct CU II TOP video card. This is a more modest frequency level than the 1293 MHz that we observed on ASUS’ GeForce GTX 660 Ti DirectCU II TOP video card that we reviewed here. We can happily report to you that the ASUS GeForce GTX 660 DirectCU II TOP video card clocks the GPU somewhere beyond 1162 MHz when in a heavy 3D application, and that’s very good news for the gamers that don’t like to meddle with overclocking. This was quite a nice and expected surprise, as ASUS’ GTX 660 Ti video card had the same impressive characteristics. The GK106 GPU has a lower heat generation than the GK104 and thus the manufacturer has decided that the base clock can be higher than the GTX 660 Ti, considering that the cooling system is the same on ASUS’ GTX 660 and GTX 660 Ti video cards.ĭuring our internal testing we observed that the ASUS GeForce GTX 660 DirectCU II TOP video card automatically overclocks the GPU much higher than the 1137 MHz stated by the manufacturer and also reported by the GPU-Z video card utility. These frequencies are going to help the ASUS GeForce GTX 660 DirectCU II TOP video card achieve much better benchmark results than cards that stick to the standard frequency recommendations from Nvidia. The default GPU speed is 9.3% higher than the reference recommendation from Nvidia and the Boost frequency is a significant 10% higher. These are impressive default frequencies for a card that comes set up likes this directly out of the factory. The card comes with official PCI Express 3.0 support and has complete DirectX 11.1 support.ĪSUS’ GeForce GTX 660 DirectCU II TOP video card comes with an impressive 1072 MHz default GPU frequency in 3D mode and a 1137 MHz Boost frequency option when the application requires maximum performance. The 2048 MB of GDDR5 memory on the 192-bit memory BUS should provide a bandwidth of 144 GB/sec and, while considerably less than what AMD is able to achieve on its 384-bit BUS architecture, it is still enough to keep the GK106 well fed.
The reference frequencies recommended by Nvidia for the GTX 660 video cards are 980 MHz for the GPU, 1033 MHz with the Boost activated and the usual 6008 MHz effective GDDR5 frequency. There are 80 TMUs and 24 ROPs inside this version of Kepler and, while there's less TMUs, the number of ROPs is the same as on the GeForce GTX 660 Ti. Getting back to the reference specifications of the GTX 660 architecture, we now know that the card comes with 960 active CUDA cores and works with a narrower 192-bit memory BUS. We know that the yields at TSMC are improving, but we believe that these are good enough right now, as Nvidia wouldn’t have designed such a big GK106 for the mid-range. This is a strange number for a video card, but it seems the company has decided that this is the sweet spot ratio between the die size, the yields per wafer and the performance. The new GK106 GPU sports no less than 960 CUDA units.
#Video card benchmark nvideo gtx 660 series#
This is also a Kepler-based chip, but it has a smaller die than the huge 3.5-billion transistor GK104 that’s inside all 600 series GeForce cards starting with GTX660 Ti. These processors are implied in the Kepler's power efficiency when the GPU is using one unified clock speed.Moving the offensive to the $200 to $300 price range, Nvidia has just launched the GeForce GTX 660 video card that’s powered by the GK106 GPU.
SMX: next generation streaming multiprocessor. It is able to control antialiasing with the merge of several sample into one pixel.
The result will be a depth value or a final pixel. This hadware component is taking pixel and texel information, and processing it through vector and matrix operations. The other name of this unit is raster operations pipeline. It is able to distort a bitmap image, and also to resize it, to rotate it and to place it as a texture onto a plane of a specific 3D model. This unit was a physical processor separated from the main graphics processing units. You should refer to the respective online stores for the latest price, as well as availability. This is why we prefer for the moment not to show a price. Price: For technical reasons, we cannot currently display a price less than 24 hours, or a real-time price.
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