I think people don't realise how much Macs differ from one another, each change in form makes a change in hardware. There were at least three video card companies in use in Macs, ATI, NVidea and Radeon. Mac Minis were Radeon. If you plug a Radeon card into another Mac the graphics might work but what about the rest of the hardware.? Best to stay with Mac Minis, there's still far more of them than there are SAM boards and at a far better price. I just have to be patient and wait for the weekend, my Mac Minis in his house and he's not that close that I can just run over in the evening...
