MSI Pro Carbon B350 Motherboard 'overrules' manual settings

Hi All,

I am quite new to overclocking but I am starting to get some quite nice results already. There is one thing I have not been able to figure out.

When I make certain changes in the bios, the motherboard tends to overrule these. Have a look at the screenshot below:

https://imgur.com/4NYbwBP

I chose to manually change the tCL timing to 15 (2nd column) however the system changes that to 16 instead (1st column). When I boot the system and look at CPU-Z, the system indeed runs it at CL16 rather than the CL15 that I chose.

The same goes for CPU-voltage:

https://imgur.com/rYAomQy

I have manually entered 1.325V (2nd column) but the system turns that into 1.360V (1st column) and when I boot the system runs at 1.36V.

In both cases that first column is greyed out and I can't change anything there.

Does anyone have an idea how to change this? And make sure the system follows the instruction?

Thanks so much!

Marc

*EDIT: changed the imgur links, they were not visible in my post
Reply to nakkie_marc
4 answers Last reply
More about msi pro carbon b350 motherboard overrules manual settings
  1. Are you on the latest BIOS with the AGESA microcode update? Mind sharing your full system's specs like so:
    CPU:
    Motherboard:
    Ram:
    SSD/HDD:
    GPU:
    PSU:
    Chassis:
    OS:
    Reply to Lutfij
  2. MERGED QUESTION
    Question from nakkie_marc : "MSI Pro Carbon B350 'overrules' manual settings"

    nakkie_marc said:
    Hi All,

    I am relatively new to overclocking but I am already getting quite good results. There is however one thing I am not able to figure out. When i adjust certain settings in my bios, the motherboard 'overrules' these and uses different values instead. I have two examples in the screenshots below:




    In the first picture you see I manually chose a tCL timing of 15. However the motherboard corrects that to 16, which is displayed in the first (grey font) column. When I reboot the system, the system runs at what is in the grey column, so in this case at 16.

    The same happen with the CPU voltage. I chose a voltage of 1.325V and the system corrects it to 1.36V. When I look with CPU-Z it indeed shows the system runs at 1.36V.

    Does anyone have an idea why this happens and how I can shut that off?

    Many thanks!

    Marc


    Anonymous said:
    Is XMP on? If so, it will overwrite your manual settings on ram.
    Reply to rgd1101
  3. Lutfij said:
    Are you on the latest BIOS with the AGESA microcode update? Mind sharing your full system's specs like so:
    CPU:
    Motherboard:
    Ram:
    SSD/HDD:
    GPU:
    PSU:
    Chassis:
    OS:


    Of course!

    CPU: AMD Ryzen 1600
    Motherboard: MSI Pro Carbon B350 | Bios: E7B00AMS.160
    Ram: Kingston HyperX DDR4 2133
    SSD/HDD: 256GB Samsung SSD / 2TB WD HDD
    GPU: MSI Radeon Rx 580 Gaming X 8
    PSU: Corsair CX650M
    Chassis: Corsair Spec Alpha
    OS: Windows 10 Home

    I think the bios version I have currently is indeed the latest.

    Thanks!
    Reply to nakkie_marc
  4. @vapour: A-XMP is disabled
    Reply to nakkie_marc
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