Hi guys. I am confused and lost and in need of some elucidation regarding case fans. First: are the Phanteks F140HP and F140TS actually two different fans? On one site I read they're different names for the same thing. Second: in my case (Corsair 900D), should I use both 140 mm and 120 mm fans, or just one type? Why? Third: How many fans and how many radiators should I use with a Haswell-E chip and two GPUs? I have no clue what to go for. I will be using the Swiftech H-240X to cool my CPU, and I don't know whether I should leave the stock fan on or replace it. Thanks very much for any answers you guys can give.