http://www.tomshardware.com/answers/id-1785226/water-cooling-101-bother.html
-Best CPU Block for Haswell per testing @ xtremesystems is the EK Supremacy
-To my mind, 780 SC is not worth water cooling because it has a reference PCB and stock VRM which put a crimp on OC potential. If it's not "yours" already, grab the Asus DCII, hit 25% OC's on water no problem. EK doesn't have the lowest GPU temps with their blocks but there's only a 2C spread between all manufacturers. EK rules tho on the VRM (12C advantage) and VRAM cooling.
-For rads, martinsliquidlab puts Alphacool at the top from 1000 to 2200 rpm
- For reservoirs, Id recommend the borosilicate glass tube ones but they a tough fit in the 750D. After those the EK Res 3 would be my choice
Pumps....a D5 or 35x .... doesn't matter whose.
For a 4770k and 780 you'll need about 460 watts of cooling (290 for OC'd 780, 145 for 4770k, 25 for pump, figure 60% of that to be provided by rads or 275 watts
Each 120mm of rad gives ya about 63 watts of cooling with 1 fan at 1250 rpm, 76 in push pull.... so a pair of 240s will work.... 360 will be a little short. The rule of thumb of 1 120mm for each unit + 1 doesn't work when ya using 300 watt GPUs.
If ya jump to 1800 rpm and the noise that goes with it, ya talking 90 (single fan) and 108 watts (push pull) so a 360 w/ just one fan works there