109°F (43°C) is just fine, you may start worrying when its closing to 150°F (70°C)
if you don't overclock your CPU and you installed the cooler correctly, you have nothing to worry about.
Thanks, it's just that I had a bad experience with a video card and it messed up my system due to overheating long time ago. Now I'm pushing it with two HD 4770 cards on Crossfire. Just got it build today so I hope it doesn't overheat too much on the long run.