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MSI X299 XPOWER GAMING AC Motherboard Review

By Steven Bassiri from Sep 27, 2017 @ 9:50 CDT
TweakTown Rating: 92%Manufacturer: MSI

Circuit Analysis




The X299 XPOWER GAMING AC reveals its secrets without its heat sinks.





The VRM on the motherboard for the CPU VCore is made up of 12 phases; six PWM channels are doubled to 12. The IR35201 is being used in 6+1 phase mode, with the +1 being used for the CPU's VCCSA, so you get a total of 13 phases under the VRM heat sink. Each VRM phase for the VCore and System Agent uses an IR3555M 60A fully integrated PowIRstage.




Six PWM doublers can be found on the rear of the PCB. An IR35204 digital PWM is used to control the single phase for the VCCIO, which uses a NexFET CSD87350Q from Texas Instruments and a CHL8510 driver.




Both memory VRMs use Primarion PV4210 digital PWMs, which are located on the rear of the motherboard. Each memory phase uses two 25A/40A NexFETs, the CSD87350Q.

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