I have spent quite a bit of time working with Peltier coolers, during that time I've made cooper chambers with attached the Peltier element attached and changed from 6 amp units to 9 amp units. It seems like a good idea to use 40 F degree water to cool the CPU and not air at 70 F. I went the conventional route and used two water loops one for cooling the Peltier and one loop for cooling the CPU. I was able to learn quite a bit about the Peltiers and modified the system as I went along, I moved from a plastic tank with a cooper bottom where the Peltier was held to a full copper tank for more strength. I decided to reduce the size of the tank to decrease the cooling time and also found a higher current Peltier. In the back of my mind I had the idea of connecting the Peltier directly to the CPU and now at this time rather than make more smaller tanks I believe I'll work on connecting to the CPU. I'll use a cooper plate with a pin head sized thermister to control the temp, the small size is necessary for a quick response time. I can see a lot of advantages to using this method and removing one water loop and the associated losses in that loop.