its possible that your HS/F could be mounted wrong or something like that, I've had it happen. reapplying some type of thermal compound should drop you a few Cs. and heres a suggestion. For some good cooling, try the tornado on the side if thats possible, and drill a nice blowhole with a new fan on the top. you've got intake right onto your vid card, chipset, and cpu, and exhaust from the cpu too. Thats the way my case is set up, and i dropped my temps from (stock) idle at 55-56 to (overclocked) idle to 41-42.