Test: MSI MAG B660M Mortar Wifi


The PCB and connectors:

Let’s start with the PCB features that can be interesting tools for overclockers. They are almost non-existent on this model considering its position in the MSI range. For example, there are no physical power or reset buttons, which is a shame in 2022, especially since cost should not be a barrier.

  • The EZ Debug LED: 4 LEDs (CPU – DRAM – VGA – BOOT) that allow to diagnose errors during the boot process. If one of them stays lit, it means that the corresponding component is causing problems.

The PCB :

Our MSI MAG B660M Mortar Wifi is equipped with the controller based on a 12 + 1 + 1 phase power supply. The CPU part consists of 12 phases and on this model there is no doubler, but beware that the phases are placed in parallel, so there are really 6. The controller is a RAA 229132 chip.

The 12 mosfets are all 60A ISL 99360Fs. The mosfets in the power stages generate the most heat as they are responsible for the voltage conversion and feed the CPU from the 12 volt EPS connector.

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