The worst AMI bioses you can imagine, for example my Pro266 Plus (ms-6365), the bios has a messed up annoying way of writing to the screen buffer that creates really bad lag. Also poor overclockability, and just shabby quality, I would say one step above PCChips (god no, helllp, not the rabid pcchips, no please, get it away from me, bloody murder (my response when confronted with a system containing a pcchips)).