I have a Asus ZENITH II EXTREME ALPHA with a 3990x in a custom cooling loop (Three 480 Rads all from EK).
My cpu was fine at 4.4-4.6ghz (almost always ran at least 4.4 as long as I disabled SMT). Then I went and updated to the latest firmware version (1101) and I can never go above 4.1ghz.
My temps on idle is 38c and on load 48 average with a few peaks at 50c and quickly dropping to 48c. The temps where the same before the update too so it is not temp related.
The settings are identical as before and I even reset to factory settings and also re-flashed the bios multiple times.
Sadly nothing worked and calling Asus was a waste as their fix was to tell me to downgrade the bios (even though their own website only shows the 1101 and no older firmware are available).
My Power supply is an EGVA 1600watt so it can handle the power and I run a single 2080ti.
Has anybody had similar issues? I am out of ideas and this cpu is too expensive for me to eat the performance downgrade.
AMD Threadripper 3990x
EVGA 2080ti XC Copper edition.
Custom cooling loop with Three 480 Radiators.