concretefire: I like the improved CPU Cool Down Test in the latest version as well as two lines of information at the top that includes CPU Load. It's been more thumbs up than thumbs down recently so I think you should give it a try and decide for yourself.

http://www.fileden.com/files/2008/3/...alTempBeta.zip

The CPU Load display in RealTemp 2.90 is very accurate and repeatable. Just running Task Manager on my system creates 0.5% load and increasing the refresh rate doubles that. I never knew useless information like that until I used the new RT Load feature.

It might help you find out if you have any software running in the background causing your jumping temperatures. The sensors rarely jump around unless the load is changing. Disable useless background tasks until you get your Load down to 0.0% and then have a look to see how stable your temps are.

ericjia: I'd be very interested in what temperature your CPU idles at when at low core voltage and low MHz. That's what C1E is designed to do to save power but I found that doing this manually gives you a good baseline which you can compare to others. A wide variety of CPUs don't vary too much during this test. Plus or minus 1C covers the majority of Intel Core processors. Let me know when you have the time if you need any help or suggestions.