This is my H400i build from December of 2017.
3770k at 4.6Ghz with a GTX 1070 at 2088Mhz. 3DMark Firestrike Demo score is ~15700. Liquid cooled with Alphacool, EK, Mayhems, and Koolance parts. The build's primary use is for gaming while I also do some light photo editing.
All prices are from actual purchase day so the 1070, for example, was $389, after rebate, from Newegg back in 2016. The 3770k was a hand me down, and the license for Windows 10 is actually an upgrade from Windows 8.0 back when it was only $40 per license in ~2013.
The radiator is connected to the loop by Koolance Quick Disconnect fittings (QDCs). The pump is part of the Alphacool GPX M01 for 1070/1080 reference boards. There is no reservoir as the loop is drained, filled, and bled outside of the case while on the bench from the bottom port of the Alphacool UT60 radiator. The QDCs are then disconnected, and the loop re-assembled back in the case with no additional air, of any consequence, entering the system.
Imgur album: https://imgur.com/a/Rg3az