Hi I need a Snow Leopard System (old PowerPC software to run). I have it running on a mid 2011 iMac, runs perfect (I got SL system disks from Apple, last machine to run it). I am pre-empting and want a backup or new system equally as fast or better. I have Yosemite on this iMac as well with Parallels running SL server and it works, but slowly with 16GB ram. I have a choice then between a new Mac Pro with SL Server running in Parallels, will it be any quicker in Parallels than my current native iMac? Or do I get an old 2,1 Mac Pro? I have researched geekbench scores etc and think an 8 core 2,1 Mac Pro is my maximum, but would like opinions and help please. Snow Leopard on an old Mac Pro or virtualisation SL Server on new Mac Pro? Thanks.