I'm mounting a Corsair Hydro H100 (CoolIT 240mm closed-loop system with dual 120mm fans) in an old chassis that originally just had an 80mm top blowhole with the option to mount two 80mm fans in the top PSU bay (assuming you mounted the PSU in the bottom instead). I'm actually adding a 360mm grill so that there will also be a 120mm dedicated blowhole fan. What I REALLY want to do is go all-out with a push/pull configuration. What do I need to know? The two included 3-pin fans are probably higher SPI than typical 120mm fans, so I assume they would need to be left as the "push" fans. I bought more Corsair "quiet" PWM fans when I saw the 2-pack at Fry's. The pump/CPU water block supports PWM and this system will be loud enough as it is, so will these make good pull fans? I remember hearing many years ago when I made my first HTPC (AMD Mobile Barton in a Shuttle SN45G2) that Push-Pull only works when the pulling fan is higher CFM than the pushing fan, but that may only apply to that situation (80mm push air cooler with external 120mm ducted exhaust). I also have many 3-pin fans I can use including two Scythe S-Flex S-FDB fans. What's more appropriate? I don't have the Corsair Link thing for fan speed control though I may buy it. This case is going to be an absolute wind-tunnel so I think I can afford to run everything at the lowest speeds except for the H100 push/pull setup (plan to de-lid and O/C my Haswell i5 4670). Cliffs: What is there to know about Push/Pull configs especially as they relate to radiators? How should I use the fans I have available (2x PWM "quiet" fans, 2x Scythe S-Flex S-FDB quiet fans)?