The anatomy of a 'bow'.

[SNiiPE_DoGG]

looks like dd high flow (current) might be nice, either that or EK thread spacer, just a little bow

also i hope that the guys designing these waterblocks are using calculus to find max surface area dimensions... i know its the best way if you factor in the rate that heat from the cpu reaches different heights on the copper pins, double limit is bound to have an intersection that is ideal. maybe ill look into water block design for a science intensive study/project for the summer