BillDStrong

I don't think those use nesting, they use the jit to run code. Nesting is for the same system arch only, so x86-64 int the case of Unraid.

If you are looking to find Server boards for old CPUs, look at reddit's Home Lab Sales. It is essentially a marketplace specialized for exactly that. You can also use the labgopher tool made by some of the folks on the HomeLab Reddit that scrapes eBay for some popular servers that can use those parts. Browse their wiki to find links to Government auctions, and other trusted suppliers for older tech, if you don't want to risk trading on Home Lab Sales itself. You can also look at ServeTheHome forums for sell buy and trades. They tend to find great deals on HDs and really overkill tech like 4U Supermicro Servers like this beast that can use 4x E7 v2/v3/v4 CPUs, supports up to 12TB of DDR3 or DDR4, and has 4x PCI-E x16, and either 4x or 7x PCI-E x8 slots depending on how you populate the memory. The chasis supports 24 3.5" SAS3 12G/SATA3 6G drives. Here is an eBay listing for it, with 256GB Memory. Have fun going down the rabbit hole.

@ChatNoir True, you can lose a few frames, but that might be a small price to pay if you are streaming and care about interacting with fans or with other streamers you might be streaming with. It does take some memory, so on memory hungry games you can experience fps drops. This is a great setup if you aren't streaming, for applications outside of gaming like creating tutorials and other things.

How much latency does this add into the stream? One advantage of recording through the Gaming PC is the video image never has to leave the GPU before it is trancoded.

+1 for iSCSI. Have you considered just compiling it into the kernel, and letting the community create dockers for it? This would give you some idea of how it would be used in the real world, and how used it would be.