My complaint is this kind of cooler tends to re-use it's own heated exhause because air is blowing down through cooler where it hit's mobo turning out, hitting RAM & GPU turning up along side of cooler and fan where fan pulls it is drawn back into fan. When I tested some stock and low profile flat coolers years ago I found air temp into cooler even on open bench test test station with 140mm fan blowing air over top of motherboard CPU was 8c hotter than if fan was turned over pulling air out of cooler (at same cooler fan speed).
So almost any small tower will cool much better than stock flat coolers do.
Phanteks Owners ClubWays to Better Cooling
i7 980 @ 3.55GHz =PH-TC14PE w/2x TY-143 fans =Crucial Ballistix 3x4GB =GA-X58A-UD5 =ASUS GTX580 DirectCU II =Enermax Modu84+ =Define R2 w/3x TY-140 case intake fans; all PWM controlled by CPU fan socketPhanteks Enthoo Primo MoBoRampage III ExtremeCPUi7 980X @ 4.0GHz =R1 Ultimate w/2x TY-143 fans =Dominator GT 6x2GB =Rampage III Extreme =ASUS GTX580 DirectCU II =TX850 =Enthoo Primo w/ custom castor base