I know some of the Corsair fans are optimized for high pressure, but im on a slow connecton right now so I cant check if those are the ones. If you already have hem, I would keep them on your current 240mm rad (maybe mount it off the back of the case) and get top notch fans for this one. Silverstone Air Penetrators, Noctua NF-12's or Gentle Typhoons (not sure which model) come to mind.