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ASUS ROG Strix B450-I Gaming (AMD B450) Motherboard Review (Page 3)

By Steven Bassiri from Nov 9, 2018 @ 2:49 CST
TweakTown Rating: 92%Manufacturer: ASUS

Circuit Analysis

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The Strix B450-I Gaming shows us the goods with the heat sinks removed!

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The VRM is in a 6+1 phase configuration with each phase utilizing an IR3553 40A PowIRstage for the CPU VCore, and then a single 60A IR3555 for the SoC. The ASP1405 is used, and it's most likely a re-branded IR controller.

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The memory VRM might be located under the PCI-E slot or it might be at the top of the motherboard where they are using tiny On Semi MOSFETs. Either way, it's most likely a single phase. It's actually more likely it's located at the top as after we took these pictures we spotted a Richtek PWM controller on the back of the PCB which would control those small MOSFETs on the front of the board.

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