What are your CPU core temperatures idle and underload? I am just wondering whether my thermal paste is effective as should be, so I feel a comparison with others would help me out. Also I'm using HWMonitor and it gives me the temperatures of my four cores as well as a package temperature, but I'm not sure what package temperature means. My four cores are at 28 degrees Celsius and the package is at 35 degrees Celsius I don't have any underload temperatures because this PC is brand new so I haven't played any games on it yet. But I appreciate you posting your idle and under load temperatures. Thank you! Also I'm using a Intel Core i5 2500k with a Hyper 212+ Push Pull configuration. It hasn't been overclocked yet.