Cooling Capacity: Must match the CPU's Thermal Design Power (TDP). For instance, a mid-range air cooler like the Noctua NH-U12A balances quiet operation with cooling performance, whereas high-density deployment scenarios require models capable of handling higher thermal loads (e.g., 4U active coolers rated up to 300W).
Compatibility: Ensure the cooler supports the motherboard socket (such as LGA3647 or LGA4189) and accounts for chassis height constraints (e.g., low-profile coolers are required for 1U or 2U chassis).
Noise and Reliability: Opt for fans with dual ball bearings and noise levels below 25 dB to ensure stability during long-term operation.
Airflow and Air Pressure: High airflow (exceeding 50 CFM) combined with high air pressure (over 3 mm H2O) effectively handles complex cooling scenarios involving multiple hard drives or GPU expansions.
