Originally Posted by SavantStrike
So, one pitfall that hasn't been mentioned yet is 4k decoding support. It's enough to choke a quad core, so you'll want something that can handle this in hardware. Skylake intel integrated graphics, Nvidia Pascal, or AMD Polaris and newer all support this. The 3rd gen i5 listed in the first post will not, so you'd need to add a GPU.
That pentium system in your last post should do nicely. I had no idea that G4560 pentium chips were still so expensive or I would have sold mine a while ago.
EDIT: these prices are in CAD, that explains it.
My $50 Odroid-c2 can handle 4K 60Hz decoding pretty easily. consider something like that for your HTPC!
ODROID-C2 (pretty old now, probably a newer better version) has a dedicated video decoder capable of X265, X264, other common formats, plus it handles up to 4K 60Hz
Whack Odrobian on there, install Kodi, bam, $40 HTPC.
** No good if you want to do web browsing, but fine if you are just wanting to play local media and stream.