ARCTIC Liquid Freezer III 420 Pro Black – massive 420 mm AIO water cooler with three high-static-pressure P14 Pro PWM PST fans and integrated 60 mm VRM fan. Redesigned pump, copper cold plate, and native support for Intel LGA1851/1700 & AMD AM5/AM4 deliver extreme cooling performance for overclocked flagship CPUs (i9-14900KS, Ryzen 9 7950X3D). Pre-applied MX-6 paste, fully sleeved tubes, and optimized fan curve ensure whisper-quiet operation under load. The ultimate choice for enthusiast workstations and extreme gaming rigs.