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MSI X470 Gaming M7 AC (AMD X470) Motherboard Review (Page 3)

By Steven Bassiri from Jul 20, 2018 @ 10:00 CDT
TweakTown Rating: 91%Manufacturer: MSI

Circuit Analysis

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The X470 Gaming M7 AC shows us the goods with the heat sinks removed!

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We see the VRM here is in a 12+2 phase mode, with the CPU Core domain in a 1H1L (one high-side one low-side MOSFET) configuration and the SoC in a 1H2L MOSFET configuration. The PWM controller, the IR35201 is used in 6+2 phase mode with phase doublers found on the rear of the motherboard. The low-side MOSFETs are the ON Semiconductor NTMFS4C024N, and the high-side are the NTMFS4C029N.

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The IR3590 phase doublers with dual integrated drivers can be found on the rear of the motherboard; there are six of them to double 6 phases to 12 with proper driver outputs. The memory VRM uses a Richtek RT8125E PWM controller, which is single phase PWM with integrated driver and two low-side and two high-side MOSFETs, which are the same as on the CPU VRMs.

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