How accurate is Core Temp for an AMD processor?

I'm running with a quad core processor and Core Temp is reading around 25-30C during general use and maxing out around 45-50C when I play games. So it seems my temps are fine, but I'm wondering if Core Temp is very accurate. If not, can you recommend a better program? Thanks.

Well CoreTemp tends to give um.....Core Temps, not the whole die temp.

I use that and ASUS PC Probe II as well. Which was always 10 degrees higher.

So I decided to offset Coretemp to match what I get from PC Probe. I would rather have the full dide temp than the individual core temps.

What it came down to was that I was certain that my 1100T at 1.5v running at 4Ghz was NOT running at 30c like core temp says, even though the cores are.

So what are you trying to measure, the cores or the die itself?