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MSI B450 Tomahawk (AMD B450) Motherboard Review (Page 3)

By Steven Bassiri from Oct 3, 2018 @ 10:00 CDT
TweakTown Rating: 90%Manufacturer: MSI

Circuit Analysis

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The B450 Tomahawk shows us the goods with the heat sinks removed!

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The VRM is in a 4+2 phase configuration, and while that might seem low, in this case the number of MOSFETs has been doubled per phase to decrease overall temperatures when the VRM is under high load. We find a Richtek 4+2 phase PWM designed for new AMD CPUs, and it has three integrated drivers for the VCore output (4 phases). The SoC phases and one VCore phase use Richtek RT9624F drivers (labeled 4P=). The MOSFETs are the ON Semiconductor NTMFS4C024N and NTMFS4C029, with two of each per phase.

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The memory VRM is one phase with the same MOSFET configuration as the CPU phases, and it's controlled by a Richtek RT8125E PWM controller with integrated driver labeled "8Y=".

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