even though i use the p67 fatality, except from annoying uefi background image (i hope there will be some editor tool which can remove/replace with whatever user want), all these 3 asrock mobos(extreme4/6, fatal1ty, are quite similar ), differentiate only in add-on chipsets and a bit weaker vrm department in exteme4 (8+2 vs 16+2), so i suspect all 3 suffer the same bugs.. whenever someone points out some bugs, they fix for all of boards, as its likely all will be affected.. . I gathered all the bug list reported in this thread and report the behavior with 1.70 bios

- Pressing [Del] key to enter UEFI setup does not consistently work seem to work ok most of the time
- Saved profiles are not preserved when battery / power cord is removed work OK
- Devices connected to SATA3_M1 & SATA3_M2 ports do not show up in UEFI setup not much of a bug i think, as already stated, just needs enabling bootable
- ODT WR / NOM (channel A&B) do not show current parameters in UEFI Exists in Fatal1ty also, cosmetic bug i think
- Connecting a device to rear USB3.0 ports causes a prompt BSOD (BSOD squarely points at Etrontech driver, tried both 0.89 and 0.91 drivers) work OK at least with 0.96 drivers, possibly was a driver fix
- Full screen logo [Disabled] option is not saved into profiles still there, cosmetic i think
- Using Clear CMOS button results in all saved profiles being wiped! work OK
- Adjusting BCLK frequency results in the board failing to POST work ok (only >105 start problems, not to blame the bios.. )
- Disabling Spread Spectrum results in the board failing to POST work OK


in addition to not save in profiles the "Full screen logo [Disabled] option", i found 2 more menus which are not saved in profiles in Fatal1ty(you should check if extreme4/6 has the same "bug")
1) Super I/O config (i always disable all 3, and always find them reset when load profile from a <load UEFI defaults> state
2) Advanced USB Config (i enable USB3 legacy, and always find it reset to disabled when load profile from a <load UEFI defaults> state


p.s.> pardon my ignorance for this question.. when u manual adjust the multiplier, why the Turbo boost Enable/disable option, disappears? (the turbo boost power options do stay though, => is turbo boost forced enabled when o/c? )