VRM Overview

The 24+2+1 power phase design is cooled by two huge finned heatsinks that are linked with two heatpipes. These also cool the USB4 heatsink and 10 Gbps Ethernet controller below. Temperatures were reasonable, but did top 70°C after 25 minutes of full load on our Ryzen 9 9950X. Still, there headroom for overclocking and no fans are involved.


The backplate cools the VRMs as well as the rear of the USB4 and 10 Gbps Ethernet controllers. The VRM heatsink can be seen here, with the cable present here controlling the LED display above.


We have a similar complement of MOSFETs to the X870ECarbon Wi-Fi with the 24 vCore stages and two SOC stages being Renesas R2209004 110 A smart power stages, with a single Alpha and Omega Semiconductor BR00 5C47 stage for MISC.


There are two PWM controllers - a Renesas RAA229628 backed up by a Richtek RT3672EE.