This won't be running any extreme games. It holds it own in games like Bioshock Infinite, TF2 (very old I know), dota2 and sc2. That's why I kept my old 550 Ti video card. I pulled the video card & 2 hd's from an older box to build this one. And so far, it's working out very well.
Case - The case came with a 2nd fan (smaller on the side). I opt'd not to include for 2 reasons really. 1 - Cable management. I would have required another modular power cable to be attached.2 - the SATA cables were already somewhat tight in that area. Most of the air flow would have been blocked out of the gate. Otherwise, I like this case. The top arm came in handy in keeping cables out of the way.
This is my first Mini ITX build (all others have been on full towers). And, holy cow, things are tight and nearly impossible to get to. I found that I didn't plug things in the right order and it required me to remove the power supply on more than 1 occasion. I am glad they put the memory in a reachable location.