I have a TrueCu also and they really are heavy. Never had the testicular fortitude to run it on a vertically mounted mobo. I didn't want to suspend it so it was my cooler i used for ram benching. Would be great to use as a geeky bookend or something in the study :P

4.5GHz should be plenty for daily requirements, I'm at 4GHz at the moment in 'dusty rad in summer' mode.