Well Mr PigLover was kind enough to sell me a MB CPU combo and let me barrow some RAM to do the initial tests, set up the board, ect and I'm liking what I'm seeing....
Here's a pic of it benched with a static clean bag underneath it to help keep it safe from being pressed against the desk and what ever might slip under it....
Here's a pic of it off but power applied. You'll see by the Watt Meter it draws 4W with power applied. Granted some of that could be power supply too but I'm betting it's mostly the IPMI...
Here are pictures of startup. You'll see the power consumption jumps around between 50 and 100W...
Here you see I've temporarily loaded Windows onto a SSD for testing purposes. All the updates done so the updates don't try and run in the background while doing tests.
Here it is idling at a nice cool ~30C in a 23C room...
And consuming about 57W...
At full load, all CPUs busy (but not the RAM) you can see about 150W consumption and a peak temp of 53C in a 23C room...
Two hours later I came back after watching a movie (Thor Ragnarök) and the peak temp on any given core is 55C, average peak temp... 53.875C.
The active SuperMicro CPU heatsink was a singing!!! After killing the stress test for the evening the CPU fan settled down. It's nice that the fans are active but sing when they need to, so I guess once in use I shouldn't give them much reason too unless called upon but I'll at least know the heatsink can handle the heat and the CPU can handle the job.
Anyhow, given that these are likely the core temps, not the thermal junction temp and the tCase max is 72.1C, it's safe to say this heatsink suites this Xeon E5-2630V3 CPU.
My plan now, thanks to the VERY kind advice and people on this forum is to get a 64GB RDIMM kit (any recommendations appreciated), the BPN-SAS3-826EL1 backplane for the back of the server, the BPN-SAS2-846EL1 for the front of the server. Move my most active drives to the back and the backup/spare drives to the front and breath some new life into my FreeNAS server, hopefully with a idle power consumption of about 250W (Will check when implemented).
With 8 cores and 16 possible threads and while still being upgradeable, this should be a very fine server for a while.
Again, thank you gents, and as always, suggestions, comments, ect always welcome from this kind open minded crew!