Usually it is always best to use the Motherboard Manufacturer Utility tool to do these things. But since you are using an Asus Motherboard, i dont know if they have one, you will need to check with them.
Otherwise there are some third party software like:
Note: Third Party Software may behave differently.
Intel Desktop Board has its own monitoring tool called Intel Desktop Utilities and for extreme boards there Intel Desktop Control Centre.
All the best,
You make it seem so obvious. Yes, my Asus board came with a cd with untilities on it and one being to monitor cpu, board temps and fan speeds. I also tried realtemp. Oddly enough, the Asus utility pegged me at 23C idle (room temp. 24C) and realtemp at a more realistic 35C idle (55C running photoshop filters at full blast with cpu at 100% for 15 seconds).
I looked at cpubenchmark and like what I read there and will give it a try.
Thanks for the advice.