I can increase my infinity fabric to 2133 Mhz, but only if I set my SOC voltage to 1.4v (tested for 4 hours in AIDA64 benchmark).
1.35v is enough to keep the default 2000 Mhz IF stable.
Is 1.4v too high? How would I even know if this setting is too high? The VDDCR_SOC voltage is reported to be ~1.38v in Windows.
I notice that one of the 'VR Loop' sensors in HWINFO64 (Voltage regulator on the MB) reports a temperature of 61 Celsius, which is a few degrees higher than it would usually be, but it could just be because it has been under load for hours.
I haven't tried to set a PBO temperature limit yet, which I usually set to 85 Celsius.
I think I remember setting it over 1.4v once (as a test), and weird stuff happened in Windows 11.
EDIT - Igor's lab suggests that upto 1.4v is 'still in the safe range according to several sources'. He appears to have tested with this setting here:
AMD's new Ryzen 7000 desktop CPUs, based on the Zen4 micro-architecture, still use the same chiplet design as their predecessors, with a few small but not negligible changes. Igor already gave details…
www.igorslab.de