I don't recall the exact name of the PSU, and I've opened my case so many times today that I don't wanna look, but it's a CoolerMax atx. Yeah I've seen that video
memtest yields no errors. Using Dual Core Center, the utility that I downloaded for my mainboard, I see that the memory voltage is set at 1.90v. I apparently also can change that value to up to 2.60v, though it lists values from 2.0 to 2.15 in yellow and anything above that in red, so apparently these aren't recommended voltages? I'm not sure how much I trust the utility.