I built this for my sister as an upgrade/alternate to her MSI GT70 laptop. It's mainly used for Guild Wars 2 at 1080p. It runs absolutely silent. At full load in Firestrike it makes no audible noise. Her laptop scored in the 3300 - 3400 range in Firestrike, and this build scores in the 7600 - 7700 range. It was conceptualized around silent operation over pure price/performance ratios, and it paid off. So she's going from an extremely loud laptop to a desktop with about double the raw horsepower and virtual silence under load.
Everything worked perfectly, except the current Windows 8.1 USB installer Microsoft provides crashes when trying to load drivers for the wifi card we picked. I researched the error code and the top two problems were wifi card incompatibilities or bad RAM sectors. I took the wifi card out first to troubleshoot and the installer finished without trouble. I reinserted the card after the Windows 10 upgrade finished and it detected the wifi card fine. Every piece of hardware in this setup auto detects in Windows 10 and has drivers. I had to do zero manual driver installs except to update to the current Radeon 15.11.1 driver, which is expected.
I updated to the current version C UEFI from MSI first thing, and the CPU is automatically set to 3.9ghz in this setup. The front 200mm fan runs at 500rpm - 600rpm and the rear 140mm fan runs at 700rpm - 800rpm. The cooling here is over engineered. Neither the Hyper 212 Evo or Dual-X Nitro are stressed at synthetic loads, which was the intention. I was expecting to have to tune a few things, but everything was configured ideally out of the box. MSI's B150 UEFI is substantially handier than Foxconn's H61 UEFI or Gigabyte's AMD970 UEFI I've dealt with in my previous two builds. I am quite happy with how this turned out.