I have a question about some command keys

bcdedit /set useplatformclock true in order for this to work its supposed to be enabled in my bios but i cant even change if i want ide or ahci in my bios so how does this stuff work? i posted some links and the pictures of the main stuff in my bios below


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System Specs: http://speccy.piriform.com/results/KhIGmh4zcaiaDceT5gQEngJ

https://msdn.microsoft.com/en-us/library/windows/hardware/ff542202(v=vs.85).aspx
http://www.ghacks.net/2013/04/18/try-changing-hpet-settings-to-improve-your-pcs-performance/
https://tweakhound.com/2014/01/30/timer-tweaks-benchmarked/