Hi everyone, I have been looking around the internet but maybe my keywords are just bad. I am looking to go past the 10.55CFM fan that I currently have in my Alienware 17 R1 "Ranger". Seems the best bet is going to be moving up from 5v to 12v and I am willing to power them externally with a fan controller that is fitted to the CoolerMaster U3. So my question to you guys is exactly that, what laptop has the highest CFM rating? I have about 15mm-17mm in height to work with, otherwise I will shave down the rest to conform as I get further along. Not too concerned with noise, I use headphones while I game and when I dont I can just turn down the fan with the controller. I was originally thinking of getting the fox 2 pci blower, but I believe its voltage regulated and not PWM so basically its on or its off for the most part as voltage control is a bit more finnicky if what I have read thus far is to hold merit. Thanks everyone, really want to hit 4.5Ghz on my Ranger and willing to go to extremes to get there.