[segmondy]

Last year they sold a bunch of them 60 cores for $200. I got one, the problem is that they run hot and need a server that can support them. I'm yet to acquire a server with bar support, so it's still sitting. :-( Anyways, they are out there for decent price, keep your eyes open and you will find a deal.

[nkurz]

More than just "run hot", they were the "passive" models that require external cooling. You might be interested in these 3D printed designs for the cooling:

http://www.thingiverse.com/thing:997213

http://ssrb.github.io/hpc/2015/04/17/cooling-down-the-xeon-p...

As you mention, you'd still need a motherboard with 64-bit Base Address Register support, but at least you could keep it from burning up (or more likely, shutting down when it overheats).

[segmondy]

Nice, thanks, I'll check those out. My plan was to run it only during the winter months outside, with massive fans.