What are normal operating temperatures of the i7-2620 in the X220, using TPFanControl?

So I finally got TPFanControl working on my X220 after I really started noticing the fan spinning up and producing high-pitched whine. The fan had begun to remain on all the time, even while on battery with the CPU sitting at 800MHz. I could have sworn the fan remained off a lot of the time beforehand.
So, what are the normal operating temps of the i7-2620CPU? Right now plugged in at "Balanced" speed, jumping between 2.7GHz and 800MHz and with the fan manually set to "7," 4500rpm, in TPFanControl, it shows the temperature at 63C. On battery at 800MHz, the temp goes between 50C and 60C.
CPU Utilization remains at 7% when on batteries, 0-4% while plugged in at idle.
Are those normal numbers? If not, do I have some kind of problem with the thermal paste or heatsink, or dust?

at idle? no my fan is hardly audible at idle.
what you are describing sounds like a problem with the either fan, or improper installation, in which cases you would need warranty.
If you boot the laptop into the bios menu, does the fan come on?
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

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