Unable to adjust the SA voltage for the B660+12600KF (MSI Pro B660M-A DDR4) model.
Unable to adjust the SA voltage for the B660+12600KF (MSI Pro B660M-A DDR4) model.
Hi, I'm dealing with the B660 MSI motherboard and unlocked CPU setup. It keeps setting the SA voltage to 1.35 V, which isn't adjustable. I've tried overriding the voltage directly, using offset adjustments, and even disabling XMP. I also changed the DRAM voltage from 1.35 to 1.3, assuming they're connected, but it still doesn't change. 1.35 V is quite high for an Alder Lake chipset, isn't it? The latest firmware should help. Any suggestions?
I followed the same method you used, adjusting the CPU core voltage offset to the third value from the top and configuring the under-voltage setting. The system is now in auto mode. This should help prevent the CPU from overheating during heavy loads. Hope this resolves your issue after investing in new cooling solutions.
It didn't function properly, especially the specified SA voltage remained stable. I believe the Vcore offset isn't working either, which is disappointing but aligns with what I anticipated from the locked B660 chipset.
Could you please show the screenshot of your CPU voltage settings? Are you certain that the undervolt actually worked? If it did then I'm doing something wrong.
@VioletGiraffe Consider testing ThrottleStop 9.6 here: https://www.techpowerup.com/download/tec...ottlestop/. Capture a screenshot of the FIVR window. Look for Undervolt Protection displayed in the middle of it. Verify the microcode version in the FIVR window to confirm CPU usage. If you've updated your BIOS, it should show Undervolt Protection enabled. I don't know much about MSI B660 BIOS settings, but many Asus and Gigabyte boards include a special early 0x104 microcode option. Recent updates have disabled undervolting, likely due to Intel's decision. Only the 0x104 microcode supports this feature.
It seems the available settings don’t influence the core or system agent much. I’m unsure why the SA voltage is fixed at 1.35 V if it shouldn’t matter much. Also, their presence in the UEFI setup might be for compatibility or configuration purposes even when they don’t affect performance.