Managing power consumption and temperature of server systems has been increasingly important issue as the servers become large. The existing previous studies mainly focus on preventing system failures through decreasing temperature of target system. However, reducing the temperature of system typically requires additional power consumption to perform cooling of the system and increased temperature of system naturally increases power consumption even under the same system loads. Therefore, we propose a novel power consumption minimization method considering both the additional power consumption by cooling and the increased power consumption through high temperature. Experimental results reveal that the proposed cooling control method saves power consumption up to 12% and 28% compared with the existing cooling control method.