I am looking for some fast! (I mean fast) high airflow 140mm fans to include in my Obsidian 800d. I have some Bitfenix 140mm fans at the moment @ 1000rpm and they shift literally next to nothing. I have the rear fan blowing air inside the case as I have water cooling in the top and the VRM's and RAM are getting no cool air to them. I want either a really really fast high CFM 140mm fan or an adapter that allows a 120mm fan to be mounted on a 140mm fitting Thanks guys!!