This is a portable casual gaming box. Adding the word "casual" because of the GTX 750 Ti, as opposed to a Fury X or the alike. For me, though, GTX 750 Ti is more than sufficient. All I play are NBA 2K and less frequently the Microsoft FSX.
This build is re-purposed from a work/study computer. Most of the parts here were initially purchased late 2013.
I chose Lian Li PC-TU100 because it was the size I wanted. At that time, because I want the computer as quiet as possible, I used the very large Thermalright AXP-200 and let PSU fan face inward and serve as the CPU cooler fan. For various reasons the resultant acoustic profile was not what I liked. I tried many other parts as well but was never satisfied with the build. In the end, I decide that given the parts that are available on the market today, it is too difficult to build a silent/quiet enough computer in the PC-TU100.
Which is when I decided to convert it to a portable gaming box. This is probably a more fitting setup for the PC-TU100, anyways.
Cable customization is not in my repertoire, nor can I afford someone else making them for me. The SST-ST45SF-G comes with cables that are way too thick and stiff but thanks to the SST-PP05-E cable set, cable routing was not a disaster considering how small the PC-TU100 is. I highly recommend this set to anyone working with a mini-ITX case and looking for some stock short cable options (if you are using a Silverstone PSU, of course). In addition to being shorter and more flexible, this cable set also comes with one slimline SATA power connector for one slim ODD, which saves an extra adapter in the already-cramped case.
Using mSATA as opposed to SATA was also an effort to reduce unnecessary cables in the case. It was also why I chose the ASRock Z87 because few mini-ITX Z87's have a mSATA port.
The AXP-200 heatsink is too tall for the TU100, albeit both Thermalright and Lian Li claim 60 mm as cooler height/clearance. The AXP-200 is later used in my other build. You can check that out on pcpartpicker, too.
The cooler I use to replace the AXP-200 is the Noctua NH-L9i plus a NF-A9 PWM fan to replace the stock 14 mm fan for a little bit more cooling capacity. There are certainly alternatives that offer more performance (and perhaps for less money). But for mini-ITX systems, I am starting to lean toward cooling solutions of absolute compatibility, meaning that the cooler stays in the 95 mm * 95 mm area around the socket. The reason is that at the highly-integrated mini-ITX form factor, large coolers often block access to onboard connectors such as SATA ports, power connectors, front-panel connectors, etc. The cooler might be technically compatible, but if you ever need to plug in/remove/swap any components, chances are that you would have to do more work than if the cooler is not blocking access to onboard connectors and taking up the spaces where your hand could go. Granted, a smaller heatsink often means less cooling capacity, but personally I am willing to give up a few degrees in temperature (again I care about quietness the most) in order to make it easier for me to work inside the case.
Overall I am quite happy with this build now. I spent two years figuring out a reasonable setup in the TU100, after all. I put it in the living room where me and my roommates play NBA 2K16 after dinner. Not claiming this is the best use of the case, but it works out for me.