On my MacBookAir4,2 (Mid11 -- 1.7GHz core I5) my minimum fan speed keep changing (I tried resetting SMC several time)
Today I get a 3369RPM whereas yesterday I had a 5639 or something like that...
Hope My SMC resetting worked but I have nothing to check it did...
Anyway I still doubt my minimal fan speed is correct. Shouldn't it be 2000 RPM (My collegues have older/newer MBA with 2000 RPM)?
Is there anything else to do than resetting SMC ? Can we reinstall it ? How do we do that ?
If anyone have an advice it will be welcome !
Anyway, 3369RPM is way better that what I had yesterday, love this silence

Thanks,
XL.