We have already seen that Zalman has made its own twin tower coolers before this one in the CNPS12X, CNPS9900A, 9900MAX and the 9900NT. While in the 9900 series of coolers, it doesn't exactly match the previously named examples. There are two major changes that have been made as the evolution of this series has progressed. First is the fact that there are two fans mounted to the top of the base plate where typically only one is present. The second is that the front half of the 9900 series tower design has been changed adding more surface area as well as it being somewhere it can take advantage of otherwise lost air flow.
The latest of Zalman's dual tower evolution brings us to the cooler we are looking at today, the CNPS9900DF. There are obvious design elements that will remind you not only of the Zalman history, but of the other 9900s in the lineup, as well as a few things that set it apart, making it well worth your time to at least give this cooler a more intrigued look into what it can do.
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