so i had this Exact same question and spent a lot of time searching to find the answer.. finally after piecing together info from different forums the answer that makes the most sense is: iCue bases the CPU fan temp off of the fluid temp not the CPU.. you Can have it run off the CPU temp ......but you kind of don't wanna, Because it focuses on the "Package" temp which jumps super erratically and your fans would just throttle up and down constantly (wouldn't THAT be annoying!)...
Annnnyways... my fans and pump run *roughly around the same as you so i understand your worries. "hey why the eff is everything else running at like 900ish on quiet and these MFer's are running at like 600 OR LESS on balance?" but all is well in the land of Oz my friend :)
- like the saying says, if it ain't broke don't fix it.. or in this Case (lol) if your temperatures are ok, GAME ON! <3
