When sourcing CPU water coolers, prioritize Radiator Size (120mm, 240mm, 360mm) to ensure compatibility with the target market's PC cases. Evaluate the Pump Speed and Lifespan, typically rated in hours (e.g., MTTF ≥ 50,000 hours). For high-performance needs, check the TDP (Thermal Design Power) rating to ensure it can handle high-end processors (e.g., 250W+ for 360mm units). Additionally, verify the Cold Plate Material, where Micro-channel Pure Copper is preferred for superior heat transfer compared to aluminum.