I've got a mate who's got an old unused 4,1 with a dual processor tray that has 2x 6-core 3.33GHz X5680s on it. My 4,1 is the single processor version. Is it possible to use his tray in my computer? Will it cause problems or issues, or just run relatively okay? I assume I'll need to flash the firmware? Thanks
Flash your Mac Pro to 5,1 and swap processor trays and it should work fine. Or you can just swap machines with your friend...
I always look for this kind of swap, but all my friends still using their dual processor Mac Pro, no chance yet