Some CPU sockets the pressure is so extreme the CPU's PCB bends, that doesn't happen with X58, but it goes to show you there is no "object at rest" in this situation, it's "object under extreme pressure"
For X58 this is minimum of 100 pounds of force per square inch - 445N /100 lbf and a designed max of 200lbf or 890 N.
And mainly, why I kept asking, is like I explained, many many many times I've seen people say there is no bent pins I checked and then weeks later after exhausting troubleshooting helped nothing they finally take some pics and there is obvious bent pins.
Sometimes only a few, sometimes many bent pins, but always after people say they looked, they're sure, they double-checked, they're tech friend looked, specialist in town said no bents etc.
If you didn't feel confident opening up the CPU socket to install, uninstall, change out a CPU then you should have said that immediately. I still would have liked to see images, but it would be more understandable at your hesitations, not just that you didn't want to "Waste time checking"
You don't know me, or "What I am" so don't trust me? What is that, what I am? You were the one here asking for help, I alone was trying to help, yet I might not be worthy or trustworthy enough to help, so you can't show me your CPU socket pins. That's a pretty high horse!
You wanted help, I tried to offer a good starting point, you didn't want it, and obviously didn't need it since you have all the answers, so I guess we are done here.
And to answer your last question, as long as you don't need me to explain why, no your PSU will not give you memory errors. The amount of passes in memtest is not what you should look at, but overall run time without errors, 12-24+ hours should be plenty to let you know, 2-3 hours or less is not.
Only faulty memory or incorrect/auto settings due to memory not easily compatible with your system. Meaning it was made long after X58 chipset, and huge overall amount of memory used with auto tRFC/tFAW/tRRD auto voltages etc
Most X58 BIOS cannot even set tRFC high enough for large amounts of high density memory. Add to that your not adjusting things (voltages, timings) accordingly to alleviate those reasons for instability, which I've tried at length to get started on helping you with.
It was stable before, possibly because it was running in a downclocked state or in fail safe mode and you didn't notice or something, I am unsure, but with that type of memory (8GB modules, not made for X58 =SPD/XMP incorrect values for this chipset)
and that overall amount of memory I can't see it being stable for anyone on auto. And yes, Prime "can" use more wattage than memtest, depending on what settings you use.
You've got to learn to have more faith in the community here! You've been here a long time so you should know by now we're all here to help and there is no trolls here causing damage to peoples computers by giving wrong advice sitting back laughing
Hope you do well in your classes and have fun while you learn too (Seriously)!