I started putting this baby together in March of this year to play games at 60+ Fps for the next few years to come. (on max. settings of course) This PC is the first I have ever built and I can say that I'm very pleased as to how it turned out and am also looking forward to adding a few things here and there to make it even sexier.
One problem I ran into is that when installing my CPU cooler (Corsair H100i) I could only configure the fans to 'pull' air out of the case. Ideally I would have liked to have a push/pull set-up however my motherboard/case did not allow for this. Its really no big deal because my CPU is performing great at stock speeds and I have no cooling issues whatsoever.
The case I am using is a slightly older model and therefore does not have any 2.5" drive bays but that issue was easily resolved with an inexpensive 3.5"-2.5" conversion bracket.
Update- Sept 2016, I have since added an additional pair of 4Gb sticks. Now totalling 16gb ddr3. I have also Overclocked the CPU and GPU CPU is now running at 4.4GHz and is stable through a suite of benchmarks including Folding@Home CPU is at 1.163v and had a maximum peak of 83 Celsius. Turbo boost is off and all power management "C" stated were left default. GPU is now running a 1.5GHz on the core clock and 4GHz memory clock(effective double memory clock rate), when under load and it will drop down to the hundreds while only rendering 2d images, it keeps the fans quiet. The OC was done without adding any extra voltage to the GPU.
I literally don't have any complaints about this GPU. I play all my games in 1080p and expect not to have to turn down visual settings (except for frame eaters of course) I have the core clock running at 1450MHz and the Memory clock running at 4000MHz On the controversy of the 3.5Gb VRAM .... I really didn't experience the remaining 500mb being used even while playing demanding titles like Witcher 3, Fallout 4, and Farcry 4. While playing GTA5 and having my settings cranked I noticed about 3.7Gb of VRAM usage but not a significant frame drop or performance hit.