I'm using an Athlon XP 1900+ and I currently run at 48C idle. My VCore is 1.8V. A friend of mine said that seemed a bit high, so I tried to lower it a tad in my BIOS but it wouldn't let me lower it. The only other VCore settings I could set were 1.825 and 1.85, which I definitely don't want right now. Any suggestions/comments?