The B450 Tomahawk shows us the goods with the heat sinks removed!
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.
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=".
Last updated: Nov 15, 2019 at 01:16 pm CST
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- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and B450 Tomahawk Overview]
- Page 3 [MSI B450 Tomahawk Circuit Analysis]
- Page 4 [MSI B450 Tomahawk Circuit Analysis Continued]
- Page 5 [BIOS and Software]
- Page 6 [Test System Setup]
- Page 7 [Overclocking]
- Page 8 [CPU, Memory, and System Benchmarks]
- Page 9 [System IO Benchmarks]
- Page 10 [Thermal Imaging and Power Consumption]
- Page 11 [What's Hot, What's Not & Final Thoughts]