I just received my 7970 DirectCU II, and it's a really heavy triple-slot card. I have a P8P67 PRO motherboard, and I do not have any of those graphics card brackets/supporters that come with some cases. Is it okay to simply plug the card into my motherboard and screw it into the case like I would a regular dual-slot card, or will such a heavy component damage my motherboard when combined with a fairly large CPU cooler? I'm just being paranoid, hopefully nothing will go wrong