I was planning on buying an OCZ memory cooler as well, but it looks like the IFX-14 overlaps the RAM Dimm's, therefore making it where I wouldn't be able to... is it so big that it actually does that?
Also, how much of a difference is there between the TRUE and the IFX-14?
And How much did the IFX lower your temps? I really can't overclock ANY, without it overheating. (Although granted, I should probably reseat my heatsink, I don't have any AC5 anywhere lol)
As for the IFX, temps are normally around 1-3C better, the main advantage being that you can use slower, less noisy fans, or even no fans if you have good airflow. If you want to try for better temps, lap your CPU and cooler, apply AS5 or MX-2, then see if you have more headroom.