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ASRock X299 Taichi XE (Intel X299) Motherboard Review (Page 3)

By Steven Bassiri from Jan 16, 2018 @ 20:23 CST
TweakTown Rating: 92%Manufacturer: ASRock

Circuit Analysis


The CPU VRM is in a 12+1 phase configuration. ASRock has used Intersil's first fully digital solution, so let's see what they got.


Three Intersil ISL69138 fully-digital 7 phase PWM controllers control the CPU, VCCSA, VCCIO, and Memory VRMs.


The Smart Power Stage used here is the ISL99227B and ISL99227F, they are rated at 60A each. The inductors are rated for 65A. The capacitors are rated at 12K. These new Smart Power Stages have internal current and temperature protection, and they can be cooled on the top and the bottom. To get 12 phases from the six the PWM provides, ASRock uses six ISL6617 phase doublers on the rear of the motherboard.


Each memory VRM and the VCCIO VRM use Fairchild FDPC5030 PowerTrench Power Clip dual N-channel MOSFETs rated for 25A each.

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