Your GPU cooler must be pretty inefficient if your pulling temps 48C above ambient, then again it could be an airflow thing and not the card itself, or the monitoring program. The temps your getting on your CPU are quite nice.
Is there a possibility that airflow is an issue at this point? I know that A/C units generally have a pretty high CFM fan so that it can push large volumes of air. I doubt that the fans you have installed in the chamber are going to equal the amount of airflow the original fan did.
Looking at your pics, it appears that you have quite the mass of cabling all directly in front of the fans you installed to move air in the chamber, perhaps the air flow is being obstructed by these cables as well. Im not really saying that this is an issue, or this is the cause of anything you have discovered, I am merely thinking aloud to possibly come up with the best performance from your new unit.
Do you believe a second fan, or array of fans attached to the condenser will aid in air movement? Perhaps securing a 230mm ( or a few) fan(s) with some hot glue, or zip ties directly to the condenser will yield not only better airflow within the chamber, but perhaps improve the temps.
Edit: Perhaps I was incorrect about the CFM of the stock A/C fan, it apparently can be dependent on what the unit is capable of. It seems the more robust, higher BTU (15k+) A/C units are equipped with the higher CFM fans, while the budget models (~5k BTU) tend to have lower CFM fans in them.
I found a 15k BTU A/C unit with a 520CFM fan, and a 5k BTU unit with a measly 120CFM fan.
I also in retrospect forget to realize that perhaps your not done with this project yet, and your are just observing preliminary results. Perhaps you will better dress the cables to achieve better air flow
.Edited by Mattb2e - 7/1/12 at 1:45pm