I have El Capitan (10.11.6). I've a problem with the cpu in running Windows 10 or Linux or anything in Parallels Desktop.
It was changed from a Core2 duo e8400, and there was nothing problem.
But with this cpu Parallels Desktop error message said: prl err hvt not present and the virtual OS...
I recently picked up a Acer Aspire M5630 Desktop PC for $15 at my local thrift store. I got it because I thought it would be able to be hackintoshed. here are the specs
Intel Core 2 Quad (Q6600)
ATI 2400 PRO Graphics
4 GB ram. (user upgraded)
running Ubuntu currently