I installed a new HD 7970 into my Mac pro 2010 and after boot it sends the PCIE fan into full throttle at 100% and becomes very loud. I'm running the 7970 in bootcamp to play some games. Do I really need the PCIE fan in the first place, the card is being kept pretty cool by the fans on the card itself. Will I do damage by running my mac pro without a PCIE fan in there? Also the card needs two eight pin connectors so what I did was simply take the 6 pin connector and get an adapter and turned it into an 8 pin adapter Is all of this stuff safe?