So I just built my first computer over the weekend and have yet to do much with it. I went into the ASUS BIOS to update it and what not and saw that the CPU was running pretty hot. So I put in some Arctic Silver 5 instead of whatever is on the stock heatsink to begin with. It's still running 45-50 just idle in the BIOS. Should I probably invest in a new heatsink?? Or wait til I install XP...