So this is my Plex Server (Jupiter). Picture is from before the 2nd CPU arrived (it got stuck in customs).
She actually has a pair of E5-2695 v2 12-core Xeons. That's 24 physical or 48 logical CPU cores. All that grunt is for transcoding multiple 1080p video streams in realtime. In use Jupiter can support six full HD transcode at the same time.
Update: added some more photos from the first round of build. I'll grab some more next time I'm doing maintainance. Total array size is now just under 65TB. And jupiter's sister build Saturn is now complete mirroring all the data. I added every drive I could get my hands on a matched pair of to the array and filled all 24 bays on both servers. Smallest drive is 164GB and the largest are now 6TB, about 1/4 of the 4TB are Seagate hybrid drives.
Both builds were done in 550mm short cases, not full size 650mm rackmount cases. I used standard ATX sized mainboard and cabling is VERY tight.
I replaced the stock fans with a ton of Noctuas as the original plan was to run this in an IKEA LACK rack / coffee table in the middle of my apartment. Unfortunately the heat output (along with four other rackmount servers) was bringing the room it was in to 28C in the middle of winter.
PS: if you are buying suspiciously cheap supermicro boards, don't be surprised if it arrives without an I/O shield and in an inside out box for a different model of board.
Update 2: Added a photo of the build with both CPUs in place.