Hello I have a Zotac gtx 570 that I recently received as a present. Just today the price of it drop from $249.99 to $199.99. I am thinking about buying another one to sli. Under full load, the card can get loud. My question is that if I do buy another one to sli, would it be twice as loud? Or would it be the same or less noisy because it is sharing the work load with the slave card? Sry I'm a noob and not really tech-savvy, thanks for your time.