After 5 hours the Prime95 test halted with an error in one of its test processes (it runs two at the same time, one for each core I suppose).

Neither the CPU nor the memory modules are even remotely hot. I wouldn't even call them warm.

As mentioned, I'm currently running with settings manually input as per the label on the memory modules.

Restart the system and Memtest shows a significant number of errors. It was up to 80 while on test #4 before I stopped it.

I think I'm done testing, so it's time to check out how to get the mobo and memory replaced. Though I can't see why this won't happen again a few months from now.