Cooler Master RC-110A-KKN1 Elite 110A Aluminium Mini-ITX Desktop Chassis

Bought this chassis for my mini ITX build, it's very small but I surprisingly managed to fit in everything I needed with room to spare for airflow. With only the included 120mm fan in the front, the system never gets above 60 degrees (4th gen i5 with stock intel cooler and 750ti), with a better CPU cooler you'll drop a few degrees for sure. You can swap out the 120mm for a 140mm, but the fan then sits inside the chassis instead of in the front panel taking up cabling space. I only fitted 1 2.5"drive, but there is ample space for more, cable management is also not bad for the size of this thing. Coolermaster advertised the max GPU length at 210mm, I managed to fit a a 218mm card, just make sure the 6 pin connector on you GPU in on top of the card and your good.
With all that said it's a pretty cheap, very compact chassis that can house almost anything you'd need in your system.

CM have designed a great chassis here
Fits standard-sized PSUs, 210mm dedicated graphics, 120mm watercooling and plenty of storage expandability
Suggest you use a modular PSU for easier cable management to allow airflow
Also, populate the top storage slots first to allow breathing room for your G card