Intel frequently uses different microcodes for the same socket, this could be a problem in the future. For now it's almost sure, people already tested, that you can buy the basic model and upgrade the processor to the same processors that Apple offer, since those will have support already.
Not yet - iFixit proved that you can *remove* the CPU, but not that you can *upgrade* it.
Would that mean that the 8 core model could be replaced by the 12, 16, etc. core processors? I did that on my 2010 Mac Pro (upgraded processor from 4 to 6 core and got faster bus speed) and understand it was the processor that handled the memory: as in the ram limit and ram speed aren't hardwired into the logic board — I'm assuming the 2019 Mac Pro is the same kind of scenario.
Yes, like I said use a Xeon that Apple already uses, so you won't have any surprises. With time, people will test all the Intel line-up.
Thanks! I'll be keeping an eye out. The 12 + core versions are a bit much $$ for me at this point, but if it's anything like the 2010 MP those processors get pretty cheap after a few years. It could easily be a 10 year + machine with upgrades (and since the i/o module is on a card there's a good chance that will get a revision too as new standards come out).
That's all true, but a 16 core 3.2 (with 4.4 turbo) is a pretty decent upgrade from the 8 core, especially if using software that can do something useful with more than one core. That's a $3200 jump where I live, but give it a few years and it won't be so bad.
Did you tried to clear the NVRAM again? Usually you have to clear it 3 times in sequence to reset the user configured parameters and force the RAM detection process. Did you tried with a wired keyboard?
