We did not expect this. When we first got our hands on Zalman’s CNPS9300 AT, we assumed the company had pulled a “Honey, I Shrunk the CPU Cooler” on its flagship product, the bulky CNPS9700. That’s certainly true if you consider the tale of the tape: The CNPS9300 is 80 percent smaller than its big brother, and its total thermal dissipation area has been nearly halved, from 5,490cm2 to 2,583cm2.
Logic only dictates that this cooler should perform far worse than the Zalman CNPS9700. But the built-for-silence CNPS9300 AT nearly matches its big brother’s performance—as well as that of our top cooler, Thermaltake’s DuOrb (reviewed July 2008).