Cooler Master MasterLiquid Atmos II Pixel LED 240mm ARGB CPU Liquid Cooler

The Cooler Master MasterLiquid Atmos II Pixel LED 240mm is an all-in-one liquid CPU cooler designed for builders who want reliable thermal performance alongside a distinctive visual identity. Its most striking feature is an integrated Pixel LED panel — a 28 × 26 pixel (556 px total) display mounted on the pump head that connects via USB Type-C to a standard 9-pin motherboard header. Screen orientation can be adjusted in software through Cooler Master’s MasterCTRL application, giving you a personalised status display or ARGB animation without any third-party hub. At the heart of the cooler sits a patented dual-chamber pump redesigned for the Atmos II generation. The chamber layout is engineered to increase water pressure and channel coolant flow toward the CPU heat-spreader more directly than a single-chamber arrangement. The pump housing is constructed from PPS (polyphenylene sulphide) reinforced with fibreglass — a material chosen for industrial-grade heat resistance. According to Cooler Master’s published data, the pump endurance target exceeds 210,000 hours MTTF, and the assembly undergoes stress testing at 70 °C for 3,000 hours and 120 °C for 12 hours. Pump noise is rated at up to 25 dBA, and operating speed is 3,400 ± 300 RPM on a 4-pin PWM connector accompanied by a 3-pin ARGB lead. The 240 mm aluminium radiator measures 277 × 119.2 × 27 mm with a 350 mm tube length, keeping routing flexible inside mid-tower and full-tower enclosures. Two pre-installed SickleFlow Edge 120 mm fans deliver 141.4 CFM (240.35 m³/h) combined airflow at a static pressure of 3.61 mmH2O. Fan noise peaks at 36 dB(A) under full load; the Loop Dynamic Bearing is intended to balance longevity with low vibration. Each fan is rated at 12 V / 0.5 A with a 7-pin PWM + ARGB connector. A quick-mount installation kit covers the broadest mainstream socket range currently available. For LGA 1851 platforms specifically, Cooler Master includes offset mounting brackets that shift the cold plate toward the CPU die cluster, which the manufacturer states can reduce temperatures by approximately 4 °C compared with centred mounting — a platform-specific optimisation worth noting for Intel Core Ultra builders. Warranty support is listed at six years through authorised channels. — Verified Specifications — Radiator: Aluminium, 277 × 119.2 × 27 mm | Tube length: 350 mm Fan: 2 × 120 mm SickleFlow Edge ARGB, 141.4 CFM, 3.61 mmH2O, ≤36 dB(A), Loop Dynamic Bearing Pump speed: 3,400 ± 300 RPM | Pump noise: ≤25 dBA | Pump MTTF: >210,000 h Pump power: 3.84 W @ 12 VDC | Fan power: 6 W @ 12 VDC Pixel LED panel: 28 × 26 px (556 px), 85 × 79.2 × 16 mm, USB Type-C → 9-pin header, 5 VDC / 0.5 A / 2 W Socket support — Intel: LGA 1851 / 1700 / 1200 / 1156 / 1155 / 1151 / 1150 | AMD: AM5 / AM4 Warranty: 6 years | SKU: MLX-D24M-A25SZ-P1