[Levish]

you might want to just look at vapor/phase change cooling instead of all that watercooling stuff

search for prommie, prometia, vapochill

with one of those you'll get a max overclock short of L2N and the only attention the setup will need is some very good insulation against condensation

with any of those cpu temps will be sub zero C ... in combination with (really) good memory you may even be able to break 4000 mhz