BIOS 0705 Limiting boost speeds of 7950x on Crosshair X670E Hero Board

[Braegnok]

Is this just an issue on the 7950x or all zen 4? I did some basic benchmarks before moving from bios 0514 to 0705 on my 7700x and I picked up a few points in cpu-z on both single and multi core scores. I then moved to nm 0805 and had the same / similar performance as 0705. Ousting is still the same at around 5.5ghz.

The real-world performance impact of the C-state Boost Limiter is minimal. That is because you need a good CPU capable of boosting over 5.5 GHz with many active cores. Furthermore, most workloads will trigger other Precision Boost limiters that restrict the operating frequency.

The Ryzen 9 7950X has a programed maximum boost frequency ceiling of 5.85 GHz,..

The C-State boost limiter is not present on the Gene motherboard launch BIOS 0609, 0611,.. both have AGESA 1.0.0.2.

Attachment 96320

Like you I have also tested the newer BIOS with the AGESA 1.0.0.3A ,.. on my system overall the performance is better in multi-thread. It's the lower thread count loads that saw a small regression, perhaps results that people running single threaded performance benchmarks might see.

Personally for daily usage your fine running current version 0805 BIOS, do not worry about the impact of C-State Boost Limiter for daily usage.

[Soupladel]

The real-world performance impact of the C-state Boost Limiter is minimal. That is because you need a good CPU capable of boosting over 5.5 GHz with many active cores. Furthermore, most workloads will trigger other Precision Boost limiters that restrict the operating frequency.

The Ryzen 9 7950X has a programed maximum boost frequency ceiling of 5.85 GHz,..

The C-State boost limiter is not present on the Gene motherboard launch BIOS 0609, 0611,.. both have AGESA 1.0.0.2.

Attachment 96320

My 7950x was boosting to 5.75/5.8 on the BIOS versions that were on AGESA 1.0.02 and earlier, i.e 0614 BIOS and earlier

Currently i am running rock solid with a -30 on all cores in curve optimiser so i am reasonably sure my CPU is capable of more than its able to do because of the limiter