I can fit a RX240 Rad in the bottom of my case running two fans in push configuration. I am running a 3770K at 4.4 with a Archon cooling the chip. Linx get's the chip to 82c load and my encoding program gets the chip to 72c load. for grins I want to try 4.6 or 4.8 but want to switch to water first. I also found out I can fit a EX140 rad in the back in push/pull. The question is will the extra EX140 on the back make any noticeable difference in cooling?