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O.C. profiles allows users to save their BIOS settings to a memory chip on the motherboard that is non-volatile (does not need a constant voltage source). This means that even if the BIOS gets reset due to a power loss or the CMOS battery dies, the saved O.C. profile is available for you to quickly restore from. Most motherboards also allow for multiple O.C. profiles to be saved, meaning that advanced users can have multiple BIOS setups that they can easily switch between. These multiple profiles are most often utilized by users performing aggressive overclocking who need multiple BIOS settings they can switch between quickly if/when their machine becomes unstable.
O.C. profiles are available on most current ASUS motherboards and may be offered on other brands as well, although the feature is likely called something different due to copyright issues.
Accessing O.C. Profiles
Restoring from an O.C. Profile
Saving a new O.C. Profile
The reason you should avoid using older profiles is that depending on what was changed, added or removed to the BIOS in the update, the settings saved in the profile may no longer be relevant. While this most often just means that one or more settings are not restored, it could potentially cause the system to not POST if the profile restores a setting that the BIOS no longer sees as being a valid option.
We also high recommend not saving over the profile we at Puget Systems setup for your system unless absolutely necessary. While you may make some hardware changes in the future that require a BIOS change or two, having the original profile gives us a concrete place to start troubleshooting if you ever have a BIOS-related issues.
As always, we offer lifetime support on all Puget Systems, so if you need help with anything relating to the BIOS, just give us a call at (425)458-0273