And a handy list of supported hardware: <
Will your Mac run OS X 10.10 Yosemite?>
Basically, if you can run
Mavericks, you can run
Yosemite.
The list is composed of the motherboard ID and the model. The motherboard ID is easily obtained by pasting in the follow line into Terminal:
CODE
ioreg -l | grep "board-id" | awk -F\" '{print $4}'
You can then look at the list at the linked page. If you'd rather not use Terminal, simply option-click the Apple menu and "System Information" will pop up and you should see "Model Identifier:" as the first item with "Hardware" selected (default).
Note that the list may not be complete since there is no listing for certain MacPro models (5,1)!