Teardown and PCB analysis
Removing the board’s various heatsinks is relatively quick and intuitive. Along the right edge, 3 Phillips screws engage the backplate from the front. The remaining screws are removed from the back.
The power supply is a 20+1 design, with the “20” actually being 10 phases, each double teamed. Asus also describes this quite transparently and exemplarily on their website, which I would like to praise.
The phases are arranged in an L-shape at the top and left of the socket. The components at the very top right are probably the iGPU voltage. ISL99390 90 A Smart Power Stages from Renesas are used here, controlled by an RAA 229131 20 phase PWM controller, whereby this is only operated as 10+1. Thus, the motherboard’s Vcore VRM should be able to supply every LGA1700 CPU with core voltage without any problems even in overclocked state and doesn’t even necessarily need a heat sink.
Speaking of which, this consists of two aluminum milled parts that are connected to a heat pipe and have contact to power stages and inductors with heat conduction pads. The heat sink also visually covers the IO and integrates a “Polymo Lighting” light element.
Below the socket sits the VCCIN res. AUX voltage (1.8 V), which supplies the integrated voltage converter of the CPU, which in turn generates small voltages like System Agent or CPU VDDQ in the CPU. Two MP86992 70 A Mosfets with integrated driver from Monolithic Power Systems are used here, which are completely overkill for this application. The 2 phases are controlled by an M2940A PWM controller, also from MPS.
Various Intel ICs can be found in the IO area. The JHL8540 for Thunderbolt 4 and the I226-V Ethernet controller with SRKTU coding are permanently installed on the board. The chipset for WLAN and Bluetooth is then found on an M.2 card in the form of an Intel AX211.
The 2 additional SATA and USB 3.2 Gen 1 ports are provided by an Asmedia ASM1061 and the BIOS flashback chip is an AI1315-B0. The board is an 8 layer design according to my unofficial information.
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