The rate for your home PC is inconsequential, and the difference between a thin sheet of metal and lexan would have an inconsequential impact.
But flips are not inherently inconsequential. Coincidentally, a lot of my current work involves making sure we are not adversely affected by cosmic bit flips in safety-critical hardware.
If you have real data integrity needs, you shouldn't be relying on off-the-shelf home PC parts. There's real hardware and software for such applications.
Your basement is safe enough from cosmic rays for your personal needs.
Because it seems like you disliked them and "off" is one of the controllable options?
But I guess you are at a so advanced level of not giving a shit that you don't even care that they dance around.
Not only is the box under my desk with the window facing the wall, you are correct, I wouldn't give a shit if it weren't. I was simply noting the irony of my "professional" equipment being the most frivolous.