Sure is. I have an i5 6500 in my HTPC. In my small Mini-ITX chassis(FT03-Mini), idle temps are around 22C and it's crammed in there w/ a GTX 670. Load temps aren't going to be higher than the 60C range max I'd imagine, unless you plan on OCing w/ the newer UEFIs some manufacturers are providing to overclock non "k series" CPUs.