Okay, i will get a 6,1 next weekend and i used a MP5,1 the last 14 Years. If i have to update the SMC, i will have to install the Mac OS afterwards, right? So i look on which BootROM the 6,1 will come and then i can see, where i have to begin to install the old Mac OS Versions. It's a 6,1 with 6-core and D700 (most used privately and only for not really high Performance Tasks).
A little OT, but anything else important for me? I will use iStats for monitoring the Temps to see, if there is a reason to change the Coolingpaste (i don't know the word in englisch, in German is it Wärmeleitpaste like Arcting Cool).
EDIT: Okay, found the Filter for 6,1 and i will read the Posts. I swap my 5,1 for the 6,1. My is more faster, but i really like the Trashcan and i only use it for normal private use. My 5,1 is 12 Core 3,06GHZ with 32GB and RX580. Monterey runs with OCLP. With the new 6,1 Monterey is supported via Apple, so i don't have to use OCLP anymore.