I've gone for a multiple jet approach over a single jet;
In the background you can see the 2 small 700L/H pumps that I'm using in series for more pressure.
here you can see the spray pattern;
this is a (slightly blurry) shot of the completed "block" showing the spray chamber;
the block next to the naked cpu;
block mounted over cpu with perspex hold down;
though it's only there for a bit of added strength, the block is epoxied to the cpu, making this kinda permanent, good thing it works well
preliminary temps are kind of interesting, during setup I leaked some water on the motherboard and after I dried it out I was getting some stability issues at idle so I've backed it right off so I can post this without getting "interupted". But the quick load tests I did immediatly after I got it going indicated a load temp 10 degrees above coolant.
once I sort out the stability issues (the motherboard may not be
completly dry) I'll clock it back up and see what it thinks of it.
A quick and dirty flow rate measurment puts the flow at ~200L/H
this thing just screams out for an ultra bright blue led