I built this machine to do some light gaming(HOTS, D3, SMITE etc), software development and also, an upgrade to my older gaming machine since I hadn't upgraded since 2008. So far it's been working solid and very fast.
I am definitely considering upgrading to an aftermarket CPU cooler because the one included with the processor is a tad bit on the noisy side, but other than that it works as it should. Upgraded CPU cooling to the Cooler Master Hyper D92, and it is very quiet. I played about 1 hour of Diablo 3, and I never heard it spin up or get stressed.
It is definitely worth it to get an aftermarket cooler. I have also added a Nzxt 200mm fan to the front of the case.