PRO tip -> despite what they say in site, for example for BIOS flashing from windows, the crap center is not required, just install the
@Bios tool.
Undervolting does indeed work, but You need to test both ST and MT performance. CB20 is good for MT, but takes too long for ST, so use CPU-Z test to get a quick estimate and see if there is no problems with ST performance.
I'd try each offset from -0.025 to -0.1V to see if some are decent.
But honestly this is $$$ problem - i can personally recommend Dark ROCK PRO 4, it is pricey, but easy to install on AM4. Aside from huge size and DRAM height limitations it is incredibly silent and performant.
And people from this forum will recommend myriad of water coolers, some nearly as cheap as 212.