Today we are testing the Zalman CNPS9900DF CPU cooler, which has two fans (one 120 mm and one 140 mm) and three heatpipes. We already tested two other members of the CNPS9900 family, the CNPS9900 NT and the CNPS9900 Max, each of them having only one fan. Actually, the “DF” in the name of the cooler stands for “dual fan.” Let’s see if that translates into higher performance.

The CNPS9900DF box has a front window that allows you to see the front of the cooler, as seen in Figure 1.