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GIGABYTE Z170X-Ultra Gaming Motherboard Review (Page 3)

By: Steven Bassiri from Aug 11, 2016 @ 11:46 CDT
TweakTown Rating: 91%Manufacturer: GIGABYTE

Circuit Analysis

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This board is much more interesting without its heat sinks.

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We all know that Skylake doesn't use much power, even when overclocked, and it turns out that motherboard manufacturers have taken note. The VRM on the Z170X-Ultra Gaming is a 4+3 phase VRM and uses custom branded Power inductors and 10K black polymer solid capacitors.

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The Intersil ISL95856 is a 4+3 phase hybrid PWM with two integrated drivers on the four phase rail and a single driver integrated for the three phase rail. Four Intersil ISL6625A drivers are used, two for the iGPU phases and two for the VCore phases. The motherboard uses Vishay SiRA12 and SiRA18 for the high-side and low-side PowerPAK MOSFETs. Overall, this VRM is probably the minimum you want for overclocking. The VCCIO, VCCSA, and other rails for overclocking come from a linear regulator circuit and a few LDOs.

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The memory VRM uses a Richtek RT8120D single phase integrated PWM with drivers and uses three SiRA12 PowerPAK MOSFETs (two for the low-side and one high-side).

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