if one sets a constant multiplier in bios means all core oc ler..what ts needs to check is the base clock value and if unsure ts shall snap a photo for us to look on.
7700K can OC till 5GHz if temperature and silicon quality allows lol, it doesn't go "max at 4.5"

cpu offset set to 0
w

ts had said 4.5 but it probably be just an approx value for quick saying only..
have a look at ts screenshots, his all core is running at x44 multiplier on P95 load, and usual BCLK is 100MHz, so at 4400MHz.
in his screenshots u can also notice the clock is running at different power state...means going less than base clock, so again means his BIOS probably really not registering the change..though i am not sure if it's the instant clock or effective clock, if it's instant clock is at that rate (e.g. 800MHz seen in screenshots) means the BIOS didn't really OC the CPU, but if it is effective clock at that 800MHz  rate, we couldn't tell..therefore i'd always recommend running HWiNFO instead of CPUID HWMonitor

example of instant clock vs effective clock shown by HWiNFO app

ts had said 4.5 but it probably be just an approx value for quick saying only..
have a look at ts screenshots, his all core is running at x44 multiplier on P95 load, and usual BCLK is 100MHz, so at 4400MHz.
in his screenshots u can also notice the clock is running at different power state...means going less than base clock, so again means his BIOS probably really not registering the change..though i am not sure if it's the instant clock or effective clock, if it's instant clock is at that rate (e.g. 800MHz seen in screenshots) means the BIOS didn't really OC the CPU, but if it is effective clock at that 800MHz  rate, we couldn't tell..therefore i'd always recommend running HWiNFO instead of CPUID HWMonitor

example of instant clock vs effective clock shown by HWiNFO app

i wonder if it's some energy saving related problem. when u change ur multiplier to 47, can you go back into BIOS after the restart? see what clock speed ur CPU is running when inside BIOS. if it's running at 4700MHz in BIOS means the OC indeed did apply..

means BIOS actually did apply ur settings, but somehow boot into windows all settings get torn or sth..
using windows 10? if yes try to open ur power plan settings and set to high performance plan (newer win10 has another one called ultimate performance), then change its advance power settings, then under processor power management set the min state and max state to 100% and reboot

out of juice ler..need to summon more sifus. but if the bios shows that it can run 7700K at ur defined frequency means the BIOS definitely applied the OC values..

Your board should have this CPU OC profile:
Set CPU Upgrade 7700K 4.6GHz profile, you may try it with enabled/disabled XMP profile, reboot into windows and check CPU-Z at load. Not sure if you're facing cooling limit when OCing to higher clock, perhaps you could try 4.6GHz instead of 4.7GHz.


Try higher CPU vCore LLC such as Turbo/Extreme etc, default (Auto) should be "Standard".
Higher LLC means less vdroop (vCore drops at load).

Alternatively, you may OC your CPU in OS via GBT's EasyTune software, but you will need to install APP Center first before installing this utility.


EZ Tune: https://download.gigabyte.com/FileList/Util...e_200series.zip
APP Center: https://download.gigabyte.com/FileList/Util..._B20.0506.1.zip

if it doesn't stick after reboot something is interfering.
just uninstall all monitoring/tuning software including those of your aio, ... and start off fresh with an updated bios on default settings.
tune in bios first and see where this gets you.