Rehash of your thread 2 years ago. Same issue, same answers.
http://forum.fractalaudio.com/ultra-std-discussion/20428-axe-fx-heating.html
I guess I'm still flabbergasted that we are still discussing this. Anyone who has fan complaints has OPTIONS. Get a new fan, put it in a muffled rack, put it in another room; if you're a serious studio guy who needs a perfectly quiet room to record loud guitars these solutions should not be a problem. But it seems we need to constantly 'vent' (ha!) that it should have been done stock. I personally don't agree with that. I play in a very small room often late at night at low volumes, and it rarely bothers me.
Would it make anyone feel better or change the situation if Cliff came up tomorrow and said 'should have put a quieter fan in there'? No. (Unless all your angling for is to have Fractal pay for it...) Make the alteration if you want, and move on. PLEASE.
Ron