Got the second GTX Titan installed on the bottom motherboard. It now has two GTX Titans running.  Here's a picture of how the setup looks now. The first shelve from the bottom up is the AMD 1090T cpu and Gigabyte motherboard with the two GTX Titans installed running Seti@Home on CUDA processors.

The top shelve hold the DELL C6100 4 node server with 32 cores running World Community Grid projects. It has 96gb of memory and all nodes have a dedicated hard drive. They are running off the Cisco router that I converted using DD-WRT so that it could act as a LAN adapter. It's running all 5 port at 1GB. Room is nice and warm!!