Slow memory controller frequency (Vivobook S 14X)
- System: Windows 11 Pro
- Battery or AC: AC / Both
- Model: Vivobook S 14X OLED (S5402ZA)
- Frequency of occurrence: Always
- Reset OS: No
- Screenshot or video:
The configuration I have is the 12GB RAM model with 8GB soldered + 4GB module. The problem I'm noticing is that the memory controller seems to be dynamically downclocking the memory clock and capping it at DDR4-2660 (1330Mhz) instead of running at the advertised DDR4-3200 (1600Mhz). Please see the screenshots of hwinfo and cpu-z, which shows the 4GB memory module is clocked at 1600Mhz, while the memory controller is clocked at 1330Mhz. I ran various workloads and the memory controller clock does fluctuate dynamically but it never goes above 1330Mhz; in other words, 1330Mhz is the highest I've see the memory controller clock ever reaching. I think this may be the cause of poor performance in some benchmarks/workloads compare to similarly equipped laptops.
Is this behavior normal? Does anyone know how to access memory settings in the BIOS or disable dynamic memory clock?