Let me provide some feedback on this one. A possible overheating event may trigger the 8110-8111 events. The same overheating may cause the unit to freeze hard.
It would be important to make sure that the memory modules are well-seated and if possible I would move the modules around to see if the issue follows a particular module or slot.
I know you mentioned that the part numbers are the same, how about the DRAM number?
It would important to capture the logs of the unit to see what’s been recorded at the moment of the freeze. For this, you can use our Intel® System Event Log Viewer (SEL).