Hello, i have 2 Asus GTX 780 Direct CU2 OC edition cards in SLI that are running a little hot and causing heat to get into the southbridge on my Asrock Z77 Extreme11 motherboard. This in turn is causing the fan in there to spin at over 6k rpm, creating an absolute ruckus. My goal is to get my gpu temps down, thereby reducing the amount of heat buildup in my southbridge and hopefully solving my noise problem. I came across some PCI express fans that are ideal for cooling GPU's, but i am not sure which to go with. From my understanding, since these cards do not have the stock blowers, the fans they come with tend to expel hot air away from the card as opposed to the blower style reference cards that take in air from outside and expel the hot air out the back of the case.