Yes, I get the same thing. Not just Poser either - C4D does it especially well. Speed goes up from about 3800 rpm to over 5000 rpm, and the CPU temp goes up by about 5 degrees. The noise is quite noticeable, though I'm used to it now. The case fan switches in sometimes, as well. The wife uses her laptop and desktop in the same room (she often has both running simultaneously) so she can't complain fortunately :-)

Steve