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MSI X299 GAMING PRO CARBON AC Motherboard Review (Page 3)

By Steven Bassiri from Jul 12, 2017 @ 11:45 CDT
TweakTown Rating: 91%Manufacturer: MSI

Circuit Analysis

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The X299 GAMING PRO CARBON AC reveals its secrets without its heat sinks.

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The VRM on the motherboard for the VCore or Input Voltage is 10 phases big; five true phases are doubled to 10. The IR35201 is being used in 5+1 phase mode, with the +1 being used for VCCSA, that is why you count 11 chokes in the image above.

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Each VRM phase for the VCore or Input Voltage and System Agent uses an IR3555M 60A fully integrated PowIRstage which are best in class. Each PWM phase is doubled by an IR3599 doubler/quadruple.

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There is also an IR35204 3+1 phase PWM being used to control one of the minor VRMs for VCCIO. A Texas Instruments 25A/40A CSD87350Q NexFET is used for the VCCIO.

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Both memory VRMs use Primarion PV4210 digital PWMs, Primarion is owned by Infineon just like IR. Each memory phase uses two 25A/40A NexFETs, the CSD87350Q.

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