Getting ahead of myself as usual, but durring my time away from home I thought alot (maybe not enough) about making the cpu block for my i7 system. I know I still haven't even really cut into the block that I have posted about earlier here, but I am already set on how I will shape that block and it's just a matter of waiting for free time on the mill to do it.
I like redundancy and always planned to go two pumps. I think lots of people do the same as well. However, I think I will go two complete loops
into one cpu block. MAYBE
something like this
The base plate is .1875" thick and I'd try to mill the fins with a .006mm slitting saw. Will be very restrictive, but will have it's own dedicated DDC+ pump. Maybe even use a thinner copper plate so whatever heat this loop doesn't handle doesn't have too far to travel till it hits the next loop.
Next plate (.5" thick) up will have bowls to direct water down to the base plate and also bowls to direct water through the fins on that level. This plate will be high flow, although what I skteched doesn't look very high flow at all. Center of the fins on this plate will have a stack of silver wire and will be soldered on so that a good portion of the flow is directed towards the bottem. Then it goes through the other half of the fins before getting to the outlet bowl that will be cut so that it fills from the bottem up.
Next plate (.5" thick) is just distributing the incoming and out going water to the correct barbs/bowls.
And the top plate (.25" thick) is just that.
Or maybe I just do a simple whitewater copy, but somehow work in two inlets and two outlets, each with its own loop.
Problems with design I am sure there are plenty and of course new commercial blocks are already staying near ambiant and you don't really get much better then that without doing other things, but this design (which will be changed plenty of times before the copper starts getting cut) will lead into some other plans I have wih a few more changes.