Quote Originally Posted by Charles Wirth View Post
Trying to picture what you have planned and not understanding the goal.

You want to cool how many machines and to what temp?

If you have four units, I would assemble two units in tandem and make a two stage cooler with much better performance.

I admire your vision in using the water loop as this performs better than an air/liquid HX and you would see better performance if you used a shell in tube HX for this as this favors the high flow of the water loop. The brazed plate at sizes over 1 ton still are very constricted for flow for this to work well on the first stage.
My plan is to cool a single machine with 4 gpus on the bench. In particular 2x 3870x2 and similar crossfire/sli dual gpus. The reason I am planning on water cooling instead of an air condenser is that I can save massive amounts of desk space which is very limited in college housing. It also will remove a significant amount of heat from the room. The reason I am not going dual stage is for a lot of the stuff I want to do it is too cold and draws too much power and if need more cold I am going to either use the cascade I am getting from you or use ln2 if I am benching a fullpot platform . I will lookinto a shelltube hx.