All the time coming from the sata interface.
Grub installed allegedly correctly but first boot couldn't mount stuff? But then it went through on the second try but hung when loading KDE....
Couldn't get the graphical interface running properly even once.
As I sit here letting it memtest just to tick the box, I do think there's are two other things to be wary here. The data cable could just be bad (dd was done over USB using an external enclosure) or it could be dust on the mobo header [+1]