ZALMAN, of the cooling noise prevention system (CNPS) legacy, introduced a slew of PC cooling products at the 2023 Computex. The lineup was led by the innovative Reserator5 Z-series AIO CPU coolers, which use two sets of impellers in the pump-block. One of these is dedicated for the coolant intake, after the coolant passes through the block's micro-fin lattice, it's picked up by a second impeller, which pushes it to the radiator. The dual-impeller design also provides a degree of redundancy in case one of them fails. This ZALMAN's original design, which it has patented. This cooler comes in two models, the Reserator5 Z24 (240 mm x 120 mm radiator), and the Reserator 5 Z36 (360 mm x 120 mm radiator). The impellers turn at synchronized speeds ranging between 1,000 to 2,100 RPM, while each of the included fans do 800 to 2,000 RPM, pushing up to 77.37 CFM of airflow, at 37 dBA noise output.
The next major AIO series showcased by ZALMAN is the Alpha series, which comes in three variants—Alpha 24 (240 mm x 120 mm radiator), Alpha 28 (280 mm x 140 mm), and Alpha 36 (360 mm x 120 mm). This cooler uses a more traditional single-impeller design, although the pump-block has an interesting design that resembles a heatsink. It's topped with 7-segment LED display that puts out coolant temperature in real-time. The pump runs at speeds of up to 3,200 RPM, while each of the included fans do 500 to 1,800 RPM, pushing up to 71.1 CFM at 38 dBA. Both of ZALMAN's new AIO series support the latest CPU socket types, including LGA1700, AM5, LGA1200, and AM4. Among the air-based CPU coolers shown were the new CNPS13X (single fin-stack with push-pull fans), and the CNPS13X Plus (dual fin-stack). The CNPS13X uses a single large aluminium fin-stack, and two 120 mm fans in push-pull mode. The CNPS13X Plus is a D-type dual-fin-stack cooler, with two included fans. Both coolers come with CPU surface temperature displays.