My existing server is based on an AMD A8-7600 Radeon R7, 10 Compute Cores 4C+6G @ 3100 MHz. It's only running a 4x4TB setup and mainly used for Plex. It's done OK up until now. 4K brought it to it's knees but I got around that by buying an Nvidia shield for the living room, it never needed to transcode so all was well. However, I'm now in a long distance relationship so I do a whole lot of watch together with my girlfriend. Since a lot of the encoding is 265 and she's running a Roku TV so transcoding is needed and the poor CPU just can't do two streams if I'm upstairs on my Roku 3 as well. So, long way of setting the question up: what's a good budget processor/mobo/RAM combo I can toss into my existing case and make transcoding issues a thing of the past? I'm trying to keep this sub $500 if possible.