The Strix B450-I Gaming shows us the goods with the heat sinks removed!
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.
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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- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and Strix B450-I Gaming Overview]
- Page 3 [ASUS Strix B450-I Gaming Circuit Analysis]
- Page 4 [ASUS Strix B450-I Gaming 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]