Bay trail temps

So I made an impulse buy and picked up an Asus transformer t100. Its absolutely amazing and Im very happy with it, however.. I decided to check my cpu temp with realtemp. When Im browsing the web it sits around 60-65c and when I watch a video on youtube or netflix it will sit at 70. Considering the atom is rated to 90c this concerns me a liittle. 20c isnt alot of headroom for thermal paste deteriorating and more abuse. It can play games better than I imagined, so I would like to be able to do so without melting the cpu. Its never hot to the touch and cooling is totally passive and Im not sure if I would want to crack it open to apply some better paste.. enough rambling, you guys think these temps are too high? Should I be concerned?

I have a T100TA as well. Yeah temps are pretty high for me as well but decent considering its passively cooled. It not worth voiding your warranty for a degree or two for a TIM change.