Hi, I have pentium 4 2.53 with asrock motherboard. The clip was loose on the heatsink so I put a new thermaltake heatsink with the fan. Originally there was only one fan but now There are two fans. My cpu idles at 38 and runs very slow. If I launch only internet explorer the temperatuer jumps up to 46. under some normal use temperature reaches almost 48 or higher and it runs extremely slow. My PC configs: P4 2.53, 1GB PC2100, 80gb sata hdd, and dvdrw. please assist me why is it happening?