Built this PC over the course of a month or so. With the demise of frozencpu.com it has become increasingly hard to find water cooling parts. I have found that performance-pcs.com and aquatuning.us are the 2 best out there right now. Unfortunately, you now have to factor in significant shipping costs when building out large projects like this one.
I have left the part list brief to give the gist of the build. The blocks are EK as are the backplates for the 290x's. Tubing is primochill primoflex. I highly recommend this product if you are using clear tubing.
I overclocked this PC with performance per watt in mind. I found that 4.4 ghz at 1.2 volts was the right balance. Of course, if that is not a concern for you then this build can clock much higher as the water cooling will handle just about any amount of heat you can throw at it. For me, the extra power draw for 4.6-4.8 does not show the real world results to justify it.
Graphics cards are left stock for now as these cards manhandle any current game at 2560 x 1440. Again, performance per watt. Overclocking these cards ups the draw considerably (talking 100 watts for a 7% overclock) but who knows. Will adjust fire if necessary but for now the crossfire set up is a beast.
Tubing is a personal journey, how complicated you want is up to you. I dont like the look of long runs and bends so I kept those to a minimum. That however cost lots of money. Compression fittings are not cheap but aesthetically cant be beat.
Multiple LED's throughout the machine matching the theme.
One thing to note: The switch 810 is a great looking case but does not have alot of room for cable management in the back. Took alot of work to fit everything, but it worked in the end. Obviously the bigger, basement cases have moore room/options but I dont personally like the size of those monsters.
PM me for questions