velocityg4 :
I don't really see the point of the extreme water cooling. You only hit slightly higher speeds than a vastly cheaper air cooler in a well ventilated case. Unless you are cooling a top end CPU you are better off getting a better CPU.
There was a day when water cooling brought significant performance gains ... that days is no more. As often as not, with high performance cooling systems, you hit the voltage wall before you hit the temperature wall.
I did a build at the end of 2013 with twin Asus DCII 780s and 4770k (CPU, Asus MoBo and GFX watercooled)
CPU temps are in 60s.... GFX cards drop below 40C.... card VRMs are in high 50s. Two months later did a MSI aie cooled SLI build.... got same OC on CPU w/ Phanteks PH-TC14-PE tho must be said his was waaaay lower voltage, he was certainly a winner in silicon lottery. His cards ran in the 70s and he beat my OC by a tiny bit on the cards.
Biggest difference you ask ? You could sit at my desk with both CPU and GFX card stress tests running and you can't tell my system is on.... His, it's kinda loud (for my tastes anyway). Anyone who goes into an Intel / nVidia build looking for a significant performance boost from going under water, I advise to "expect to be disappointed". Especially with GFX cards, nVidia has locked down the allowable voltage increase so much these days that the cards are virtually indestructable. I have not seen a 9xx series build (in a reasonably sized case with adequate airflow) with a MSI Gaming, Gigabyte G1 or even Asus Strix get anywhere near their GPU throttling points. If anything is going to curtail performance on these cards, it's likely to be the VRM.
My reasons for wc'ing are aesthetics and sound. Yes, I do draw some comfort knowing that if I get an unusually happy CPU I might get an extra 0.1 GHz or 2 but mostly I am looking for something to appreciate aesthetically and that doesn't make a sound.