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ASUS Z170-WS (Intel Z170) Motherboard Review (Page 3)

By: Steven Bassiri from Mar 4, 2016 @ 8:40 CST
TweakTown Rating: 92%Manufacturer: ASUS

Circuit Analysis

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I think all motherboards are more interesting when their heat sinks come off. The Z170-WS looks amazing.

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This VRM is made up of high-quality components; in fact, it is the best ASUS has to offer for the Intel Z170 platform.

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ASUS is using two ASP1405I for the CPU VCore and CPU iGPU voltage rails. I can say with a high level of certainty that these are IR35201, which are 8 phase flexible PWMs (either 8+0 or 6+2 mode). The first PWM is providing eight true phases for the CPU VCore and the second PWM is providing 4 PWM phases for the iGPU. Each power stage uses an IR3555, which is a second generation IR3550, which are the famous 60A fully integrated PowIRstages from International Rectifier. To add a little more zing, ASUS upgraded from their 10K capacitors to 12K solid polymer capacitors for extended capacitor life.

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The VCCSA gets power from a single phase VRM powered by a Richtek integrated PWM and some ON-Semi PowerPAKs. The VCCIO gets power from a TPS51362 Texas Instruments 10A step-down integrated power converter. The IDT6V41538NGL is an external clock generator that provides higher BLCK overclocks. The memory VRM is controlled by an ASP1103 and some unknown MOSFETs. Needless to say, I have seen these same MOSFETs used in other ASUS memory VRMs, and this configuration should be more than enough.

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