well the idea was to get them both under water, however I bought the second 5870 second hand with the accelero on it and I found out later that it is not removable once installed 🙁
I have rewired that fan to go behind the motherboard. ( using an extension) I actually have 14 fans in this rig . 8 on the top rad, 2 on the bottom rad, rear, drive cage, and i have one sitting on the floor facing the MSI lightning, and one sitting on the top 5870 blowing at the NB. ( keeps NB around 40C idle)
my gpu idle temps are 22C ide and 40C load. cpu idles around 32C idle 2.52ghz ( and 62C after hours of gaming. 4.41ghz ( fans almost never hit full speed ( they run 50% most of the time )
my goal at this point is to sell board, cpu, and both gpus along with ram and use the cash for a new setup. looking at haswell and 8xxx ( and I need 32GB of ram ( I run out of ram with 12GB )