I had posted about this issue previously but figured a new thread was warranted as my original post was looking at it as being a fault (the 5.5Ghz boost limit) where as i now understand this to be something by design in the more recent AGESA updates.
I believe this affects all 7000 CPUs, but i have a 7950x and can only really relate my experience in that regard.
So the problem appears to be that if there are more than 1 core active, the CPU speed will be limited. For example under a gaming load or a single core run of CB23, the CPU will not boost higher than 5.5Ghz, regardless of the cooling solution, case airflow or power delivery. This is a hard rule put in place by AGESA 1.0.0.3 Patch A and all the subsequent updates.
If i use a BIOS revision that is based on earlier AGESA versions, then the "Advertised" boost specs return i.e upto 5.75GHz but I unfortunately cannot use those earlier revision for my particular board due to having a RTX 4090.
So my questions is why has this been done and is it something that perhaps should be made optional? or will it even be reversed in future patches?
I know this might be seen as a first world problem and some might even say that the performance difference in lightly threaded tasks like gaming is likely to be minimal and therefore unnoticeable. I am just not sure this sits very well with me when the 7950x is advertised as a CPU that boosts upto 5.7Ghz and that isn't actually achievable if you are using an updated BIOS which most will be to ensure maximum compatibility
