@PatrickKay power connections all seem to be fine, I've switched around the ports I'm using on the PSU and it's all still running. Ish.
I'll check the CMOS and RAM. The cards are supported according to the documentation. At first I thought maybe it was the CPU power connector since on the board there are 8 pins, and I'm only using 6. But everybody said those extra pins were for overclocking, so that's not it.