I just built a new PC with Ryzen 7 9700X and it clocks out at 3.5GHz in stress-tests.
PC Components:
– CPU is Ryzen 7 9700x
– CPU Cooler is ThermalRight Peerless Assasin 120
– Motherboard is MSI MAX B850M Mortar WIFI
– RAM is G.Skill 6000 MT/s CL30 2x32GB (I activated the Expo Profile in BIOS)
– PSU is Chiftec Polaris 3.0 850W (I lost one of the CPU Power cables, so currently I have only one 8-pin CPU PWR connected)
OS:
– Mainly use Win11.
– Also checked in Win10 – same problem there.
Stress-tests:
– Mainly use Aida (System Stability Test with only the "Stress FPU" option selected).
– Also checked with OCCT (CPU test with Extreme Mode, Variable Load Type, Start Cycle 1, Automatic Instructions Set and Automatic Thread Settings) – got similar results.
– I use HW Info for monitoring, but also double-checked CPU frequency with AIDA and Window's Task Manager – they all display similar values.
BIOS:
– Mobo came with 2025 Aug BIOS out of the box (issue occurred on this BIOS version too), I have updated it to latest 2025 Sept BIOS (and issue stayed).
– All settings (except AMD Expo Profile) were kept at default. This also applies to the TDP/PPT limit – I kept it at 88w.
My results (AIDA64 "Stress FPU", screenshot taken at the start of the test, but I checked for 30min – results stay similar, including Frequencies, CPU Tdie temps and VDD Voltage):
Results of someone else in the internet (YouTube video):
From what I see, the difference in frequencies is huge – 800MHz. And the only difference in other metrics is the fact that I have 0.870V on VDD, while other people have something around 0.990V.
I wanted to increase this voltage to see if it helps, but I wasn't able to. In BIOS I went to `Advanced > Overclocking > Advanced CPU Configuration > AMD CBS` and changed 2 values:
1. TDC Control `Auto -> 100 A`
2. VDDP Voltabge Control `Auto -> 950 mV`
It didn't help:
I also tried enabling PBO and the issue with low Frequency and VDD Voltage persisted:
Yes, results are higher than previous values, but I expected to see around 5 Ghz with 1.2V instead (again I have lower frequency and voltage than expected).
What should I do?