Interesting you should mention that. As part of the process, I tried booting with just one stick installed, despite the fact that I've always been told by the manual to install them in pairs. This manual showed installing one as an available option, so I went for it. The PC went nuts! Start, stop, LEDs go on then off... then on again. Crazy stuff, so I figured the manual was wrong, and traditional instructions to install them in pairs must be correct. But if that's no longer a requirement, I must have plugged in the one bad stick first! Oh well, I'll save them both of that set for the next build.
Will Rogers never met me.