What the heck is wrong? A64 3000+ running way to hot: 66C

[LostHiWay]

I just got the new MSI K8N Neo Plat. nForce3 board and an A64 3000+ (everything at default for now)

For the life of me I can't figure out why the temps are so high...Right now it's running at 66 degrees C. I've been swapping out Athlon XP's and other CPU's for the past 3 years and have never had a problem like this.

I'm using Artic Silver 5 as the thermal compound...Just a rice size amount in the middle of the CPU...then put the HSF fan on...just like it shows on the artic silver website. Still it's running way to hot. I've even tried the cheap radio shack compound...same thing.

Any ideas?

 

[CraigRT]

onboard temp sensor is reading high apparently.
i doubt it will actually be that hot...

my system runs 100% stable at stock speed and voltage and it idles 62C, which i am pretty certain is horseshyte. it's an XP2500+, just for reference.