So after many years of putting it off, and with hardware performance finally at a level that is fairly future proof (at least good enough for me, I'm still rocking a Phenom X4 and two C2D's in my 3 systems at home), I've decided to take the plunge into water cooling.
What I plan on doing is the following:
LGA2011 ATX Motherboard
i7-3820, eventually moving up to an 8-core as soon as they become available for moderately decent prices
32GB Memory
2x nVIDIA 680 GTX in SLI (I'll probably just buy 1 for now, and add a 2nd one later)
1000w Gold or Platinum PSU
That's the core of what I'll be building my system around. It's intended use will be ripping and encoding BluRay movies (for personal consumption), dabbling into 3D rendering (as a beginner, so there will likely be many mistakes. Fast machine = less time wasted) and CAD based work, converting my considerable vinyl record library into digital format so I can archive the originals, and occasional to moderate gaming.
I have narrowed down my choice of computer case for the new rig to the Fractal Design Arc Midi, mostly for it's outward aesthetics (minimalism FTW!), compactness of the chassis, ability to take a full sized ATX motherboard, water cooling friendliness of the internal layout and the minimal amount of physical modding I'll need/want to do to the case to get it to suit my tastes.
Here is an extremely rough mock up on paper of what I've been considering for water cooling options:
http://i.pgu.me/XF7InV75_original.jpg
The diagram also shows the general locations of where each component would sit within the chassis to get a better feel for how it might look when it comes to designing the actual loop and what goes where for tubing.
It shows the directionality of the loop flows as well as traditional airflow in the case. I decided to isolate each loop from each other as GPU's in this instance will be likely changed out far more frequently than the CPU would be. I understand it will double the amount of maintenance required which I'm OK with, as well I plan to push the CPU way more than I do both the GPU and the CPU at the same time, having a tighter loop for the CPU and Chipset should ensure better thermal performance from the cooling system, the same goes for when I push the GPUs during gaming and encoding.
I'm bandying about the idea of a negative pressure air flow scenario inside the case, but wonder if I might be better served to reverse the push-pull configuration into an intake scenario for the single 140mm rad and have that warm air circulated out by way of the bottom mounted intake and top-back mounted exhaust/top exhaust push-pull config on the 240mm rad, this would in effect still be a negative pressure system, but with slightly more positive air pressure being introduced.
As for the water cooling gear itself, I'm looking at various build projects and playing with ideas in my head. As a result I have yet to actually pick out the specific water cooling gear, so suggestions are welcome. I have decided that I plan to isolate my internal Blu-Ray burner from the system and install it into an external 5 1/4" enclosure and connect it via USB3, what this allows me to do is use both 5 1/4" bays in the chassis to install a FrozenQ Fusion Dual Bay reservoir (going for a Resident Evil theme)
That's all I can think of for right now, I look forward to hearing from the community on this one.