I'm late to the discussion, and, after reading all 5 pages, feel I'm going against the grain by bringing this back on topic!
I've copied the temps below from the OP. I fully understand the reduction in CPU temp due to moving the rad, but I am shocked that the chipset and GPU temps have barely increased. The system is obviously generating the same amount of heat as before (same CPU and same GPU), so how is that heat now being exhausted from the case to well that the chipset and GPU are not reporting significant temp increases?
Top Mount
CPU - 78.5°C
Chipset - 56.5°C
GPU - 58°C
Front Mount
CPU - 63.3°C Dropped 15°C
Chipset - 59.5°C Raised 3°C
GPU - 60°C Raised 2°C