Zalman's new high-end air cooling solution is the CNPS9900DF, a $89.99 dual-fan processor cooler. The CNPS9900DF features a nickel-plated copper base with four nickel-plated heatpipes, and two copper fin arrays. The cooler measures 140mm x 100mm x 154mm (L x W x H), it weighs 850g andt he total heat dissipation area is 6,800cm². The 120mm push fan spins at 1000RPM and the 140mm pull fan is a PWM model that spins at 900 to 1400RPM. Both fans use fluid-dynamic bearnings and promise a total noise level of maximum 27dBA.
The newest one, the CNPS9900DF, in which "DF" stands for dual-fan, builds on the concept by using two fans in push-pull configuration. The "push" fan is nested in the first copper fin stack, while the "pull" fan is located between the two fin stacks. The design is otherwise similar to every other 9900 series cooler.
The design of the CNPS9900DF consists of a nickel-plated copper base, from which four nickel-plated copper heat pipes pass, making a capital-omega (Ω shape, along which nickel-plated copper fins are arranged, which appear to project radially.