Let’s test one more model of the Zalman CNPS9900 family of CPU coolers: the CNPS9900DF, which has three heatpipes, a 140 mm fan and a 120 mm fan, both with LEDs.

Here is a snippet: "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."



Link: Hardwaresecrets