Thermaltake Water 3.0 Performer All-In-One Liquid Cooling System CLW0222 High performance full copper base plate accelerates heat transfer. High reliability low profile water pump provides quick liquid circulation and stable low temperature. Pre-filled with coolant. No hassle no refilling needed. Special connecting tube material prevents loss of coolant due to evaporation. The high-tech sealed circulation system prevents leakage. A must have for high performance or overclocked systems.