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GIGABYTE Z170N-WIFI (Intel Z170) Mini-ITX Motherboard Review (Page 3)

By: Steven Bassiri from Dec 24, 2015 @ 13:05 CST
TweakTown Rating: 89%Manufacturer: GIGABYTE

Circuit Analysis


Z170N-WIFI has a very basic 3+2 phase (CPU Core +iGPU) voltage regulator, but GIGABYTE also doesn't claim anything more. The VCCSA and VCCIO are derived from a linear regulator. GIGABYTE is utilizing their 10K black custom capacitors to improve aesthetics and durability.


GIGABYTE is using the Intersil ISL95858 3+2 phase hybrid-digital PWM. The first 3 phase rail has two integrated drivers and the second 2 phase rail has a single integrated drivers. To make full use of the PWM, GIGABYTE employees two ISL6625A that have "5AZ" written on them. Each phase for either CPU or iGPU uses one Vishay Siliconix SiRA18DP as the low-side MOSFET and one SiRA12Dp as the high-side MOSFET. While this VRM isn't built for overclocking, GIGABYTE still allows overclocking and even provides LLC.


The VCCSA and VCCIO circuit are located on the left, and the right is the memory VRM powered by a single phase integrated PWM and driver Richtek RT8120D utilizing the same MOSFETs as the CPU VRM.

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