ASUS ROG Strix X870-I Gaming WiFi Overview – VRM Overview

VRM Overview

The 10+2+1 energy part supply is cooled by a single giant heatsink that has a small 40 mm fan embedded in it. This attracts air in primarily by the facet of the heatsink, however there’s a mesh within the aesthetic fascia plate that sits on prime too. Out of the field the cooling association carried out very equally to that on its B850 sister board, however with barely increased VRM temperatures, peaking at 74°C.

The fan blows down onto a small ridged part of the heatsink, however in contrast to the B850 mannequin, it has a daughter board sat proper under it that may undoubtedly impression airflow a bit. We even have the added warmth from the USB4 controller being dumped into the heatsink. Clearly there’s not a lot thermal headroom right here, however this was with our Ryzen 9 9950X, which nonetheless exhibited no throttling on the finish of our 30-minute full load stress check.

If we may likelihood one factor about this board it could be to have full handbook management of each the VRM and M.2 followers, which lack full fan curve management. Up to five,000 rpm the VRM fan remained inaudible besides at shut vary and solely at 6,000 rpm and above did it begin to make a noticeable noise above the remainder of our system, when the VRM temperature was at its peak. We’d have most well-liked the fan to be a bit extra aggressive right here as as much as 5,000 it is actually not drawback. As with the B850 board, although, disabling it nonetheless did not lead to any CPU throttling, however did see the VRMs hit 81°C on the finish of our stress check.

There’s a single 80 A Vishay SiC629 part for MISC, which we have seen used on boards such because the ASUS ROG Strix B850-F Gaming Wi-Fi as its main vCore energy phases. For vCore although, we have now 110 A Vishay SiC850A phases right here, which have been additionally used on the mighty ASUS ROG Crosshair X870E Hero, with these extending over to the 2 SOC phases as effectively.

There are two PWM controllers with a Richtek RT3672EE on the rear of the PCB whereas prime facet we have now a DIGI+ branded Infineon ASP2206 controller dealing with the vast majority of the phases, together with vCore.