Any sources on an upgrade for my lowly D300's, or is grinning and bearing $2000 just the way it's going to be?
I ran OS X on a 2600x under Linux + qemu and it actually compiles significantly faster than my loaded Mac Pro. I wish hackintoshing Ryzen wasn't such a hassle.
or is grinning and bearing $2000 just the way it's going to be?
Unlikely. I suspect it has more to do with the fact the D300's performance is such that it no longer makes sense to offer them.It should be telling, but if you go to Apple's online Store, you will find you can't configure a Mac Pro from them with anything but D500 / D700s.
Apparently the D300s were so universally buggy that they decided to just stop offering them.