[citation][nom]techguy378[/nom]It is possible to have a motherboard with UEFI and no BIOS compatibility module. Remember, BIOS runs on top of UEFI, not the other way around.[/citation]
Actually, you're completely backwards on that - the BIOS hands off control to the UEFI just prior to boot, which is why UEFI won't replace the BIOS any time soon. This is the current implementation of UEFI that Intel Tiano has been based on, and it sucks, big time, due to the fact that you need drivers written for UEFI, and they are open source, not written by the hardware component manufacturers. You are confusing this with BIOS compatibility mode, which is a fallback boot order, and loads after UEFI attempts to boot. There are currently no released UEFI implementations that are not built on top of a BIOS, for compatibility reasons. You can blame XP holdouts for that.
Also, x86 UEFI (EFI 2.0) is not the same as EFI in Itaniums.