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ASUS Maximus XI Formula (Intel Z390) Motherboard Review (Page 3)

By Steven Bassiri from Mar 6, 2019 @ 22:09 CST
TweakTown Rating: 93%Manufacturer: ASUS

Circuit Analysis


The Maximus XI Formula shows us the goods with the heat sinks removed!


The VRM is in an 8+2 phase configuration here, the eight phases for the CPU each share a PWM channel, so it's four PWM channels being doubled to eight through double components. The DrMOS integrated power stages as the Vishay Siliconix 50A power stages, and we find the Micro-Fine alloy chokes to go with them.

ASUS is Using the ASP1400, which can also be found on the Maximus IX Formula and STRIX Z370-G Gaming. We think it's a Richtek PWM controller, as used on the Maximus IX Formula (Z270) as the pin-out is identical for most of the component layout (resistors and capacitors).


The VCCSA and VCCIO are controlled and provided by A single phase VRM and a POL. The memory VRM is similar to other high-end ASUS motherboards in a two phase configuration using a Digi+ ASP1103 as the PWM controller with integrated drivers.

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