Rock 4C+ hardware failures (10%). Can OS be to blame?

Since using ~30 Rock 4C+ machines over the last 12 months, running Armbian, I have slightly over 10% failure rate.

They all seem to end up where uBoot gives some memory controller voltage related messages and then die.

I am wondering if it’s possible that the Armbian Community 4C+ build can be over-volting the memory or something? Or have I just got unlucky?