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MSI X399 GAMING PRO CARBON AC TR4 Motherboard Review (Page 3)

Steven Bassiri | Sep 7, 2017 at 12:25 pm CDT - 1 min, 8 secs reading time for this page
Rating: 92%Manufacturer: MSI

Circuit Analysis

MSI X399 GAMING PRO CARBON AC TR4 Motherboard Review 19 | TweakTown.com

The X399 GAMING PRO CARBON AC shows off its goods.

MSI X399 GAMING PRO CARBON AC TR4 Motherboard Review 20 | TweakTown.comMSI X399 GAMING PRO CARBON AC TR4 Motherboard Review 21 | TweakTown.com

The VRM for the core of the CPU is actually a 10-phase VRM. We typically see 8-phase VRMs, but MSI has decided to increase the number of power stages and reduce the number of true phases to help spread out heat load among more components.

The fully digital IR35201 PWM controller outputs 5 phases to doublers that then output two power stages. The power stages are International Rectifiers IR3555, and they are fully integrated 60A power stages. I am not sure on the specifications of the inductors.

MSI X399 GAMING PRO CARBON AC TR4 Motherboard Review 22 | TweakTown.comMSI X399 GAMING PRO CARBON AC TR4 Motherboard Review 23 | TweakTown.com

PWM phase doublers are located on the underside of the PCB; they are IR3599 operating in doubler mode. We can also see the tantalum capacitors on the back of the PCB, and the doublers and capacitors are covered by a metal heat sink. The SoC VRM is made up of three IR3555 60A PowIRstages, and they are controlled by an IR35204 digital PWM controller.

MSI X399 GAMING PRO CARBON AC TR4 Motherboard Review 24 | TweakTown.comMSI X399 GAMING PRO CARBON AC TR4 Motherboard Review 25 | TweakTown.com

Memory VRMs for each of the four DIMMs use a Primarion digital PWM controller, the PV4210. The power stages are made up of two phases of Texas Instruments CSD87350Q NexFET dual N-channel 40A MOSFETs. The memory VRM on MSI's X399 motherboard is identical to that of MSI's X299 motherboard.

Last updated: Nov 15, 2019 at 01:16 pm CST

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Steven Bassiri

ABOUT THE AUTHOR - Steven Bassiri

Steven went from a fledgling forum reader in 2003 to one of the internet's brightest tech stars by 2010. Armed with an information systems degree, a deep understanding of circuitry, and a passion for tech, Steven (handle Sin0822) enjoys sharing his deep knowledge with others. Steven details products down to the component level to highlight seldom explained, and often misunderstood architectures. Steven is also a highly decorated overclocker with several world records.

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