That's alright, either way should work in the end.
You can probably check using CPU-Z: https://play.google.com/store/apps/details?id=com.cpuid.cpu_z
I would consider getting a new phone immediately, recently a few people have mentioned that their previously revived Nexus 6P went back into a bootloop. With no remedy without a hardware fix.
This should only be temporary, expect that your phone will permanently stop working and your data gone along with that.