For closer and in-depth look, I removed all heatsinks to take a closer look at the VRM and other hidden features.
Thankfully MSI decided choice functionality over aesthetic when designing the heatsinks. The VRM heatsink is tall and looks to be optimized for airflow and higher surface area. Also, the back of the VRM features a heatsink too. On the plastic IO cover and chipset heatsink both feature built-in RGB strips.
With everything removed, we can see the prints on the PCB much better now, which looks nice.
Now let’s see the VRM setup for the CPU, it is a 10-phase design with fully digital IR35201 PWM controller outputs 5 phases to doublers that then output two power stages. MSI also used International Rectifiers IR3555, and they have fully integrated 60A power stages. The Memory power delivery for each of the four DIMMs provided by a Primarion digital PV4210 PWM controller with two phases of Texas Instruments CSD87350Q NexFET dual N-channel 40A MOSFETs.
Networking is handled by Intel i211AT NIC for wired LAN while the Intel Wireless AC 8265 is used for wireless AC. The USB 3.1 ports are driven by ASMedia ASM3142 and ASM1543 USB 3.1 controller. MSI also added a separate USB 3.0 controller for the VR-Ready post which you can see as “VR BOOST” that ensure better data travels across more extended USB 3.0 cables.
For audio, the X399 Gaming Pro Carbon AC features Realtek ALC1220 audio codec with Gold series Nippon-Chemicon audio capacitors and offers 120dB output. MSI adds in a Texas Instruments OP1652 operational amplifier for the front headphone outputs. All of which is placed on separated layers in the PCB ensures equally pristine sound quality for both left and right audio channels. The amplifier can power headphones up to 600Ω impedance.