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MSI X99A Gaming Pro Carbon Motherboard Review

By: Steven Bassiri | Socket LGA 2011 in Motherboards | Posted: Sep 13, 2016 4:15 pm
TweakTown Rating: 91%Manufacturer: MSI

Circuit Analysis




The motherboard looks nice in the nude. The block diagram of motherboard connectivity shows that there isn't too much switching or sharing of bandwidth going on.





The VRM for the CPU has eight phases. A lot of the VRM components use MSI's military spec hardware. Each phase gets a "Ti" branded inductor, and the VRM uses ten 560uF solid polymer capacitors.




MSI uses the Intersil advanced linear EAPP digital 6-phase green PWM controller which features solid phase shedding to save power at idle and NVM memory onboard for different profiles. To get the eight phases, MSI used four PWM phases and doubled them with four ISL6611A phase doubler/dual driver chips. Each phase gets four MOSFETs, two high-side and two low-side. The low RDS(ON) MOSFETs are from NIKOS and are PK616BA and PK632BA.




The memory VRM for each set of four DIMMs is identical, with two phases for each set of four DIMMs. The PWM controller is a digital 2-phase VRM from ROHM Semiconductor, the PV3203. Each of the phases for both sets of VRMs uses two NIKOS PK632BA for the low-side and a single NIKOS PK616BA for the high-side.

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