They deprecated the 2006 WAY too soon. They blamed it on the 32bit EFI (same reason they didn't support gpu upgrades 2 years after release). It was pretty easy

They deprecated the 2006 WAY too soon. They blamed it on the 32bit EFI (same reason they didn't support gpu upgrades 2 years after release). It was pretty easy for a handful of major OSX releases to replace one or two files and boot it like normal. Everything worked fine. Was able to upgrade the gpu in a round about way as well. At one point I re-wired the sata bays to connect back to an areca raid controller. Then there was ssd and that kind of changed everything for "old computers." I'd have it running linux today, possibly as my work machine, if it wasn't so loud and power hungry.