Idle GPU Temp help

"Just watching you tube" is not the simple thing you think it is, if you are using chrome it is poorly coded for macs and a resource hog, if you are using flash this is as bad as chrome, stick the 2 together and it'll heat up your computer no end, lower your battery life and generally use resources. Use safari and use click to flash to keep your resource hogging down.

Your temps are well within spec and not worth worrying no about so unless you can't use the computer because of heat then accept the warmth that comes with a metal case and know that it is running as it should do.

 

It's not the best for the fans, but they are designed to be on high and it will probably affect their battery life incredibly insignificantly.

 

Another direction to consider - your MacBookPro case is made of aluminum, which is a very effective heat conductor. If you feel heat on the outside of the case - areas of the bottom, around the keyboard area - that's a good thing, and tells you that the more heat you feel on the outside, that heat is being drawn out of the heat-producting parts, cooling the whole system more effectively. Your entire Mac is a pretty effective heat sink. One of the "drawbacks" is that you will feel hot spots on the outside - because it all works.
If you want to monitor the temps that are produced, and control your fans as you wish, then there's several solutions that allow that.
The important issue, I think, is to be aware of what really is a high temp on your Mac, and if your fans run wild when not needed.
I don't believe that you should have to live with fan noise, unless it is necessary.

 

Those temps are normal and nothing to worry about. Don't bother messing with your fans, Apple's engineers know their stuff better than you do, let the machine take care of itself.