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ASUS Z270-WS Motherboard Review (Page 3)

By: Steven Bassiri from Jun 17, 2017 @ 14:38 CDT
TweakTown Rating: 92%Manufacturer: ASUS

Circuit Analysis

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The Z270-WS's hardware is impressive.

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The VRM on this motherboard is a true 8+4 phase VRM. Each power stage uses an International Rectifier IR3555 60A PowIRstage, which integrates the high-side MOSFET, low-side MOSFET, and driver all into one a single package.

The filter components are also top notch, with 10K FP-CAPs. The main VCore rail is controlled by an 8-phase digital PWM, most likely an IR35201, it's labeled ASP1405, which is ASUS's custom numbering.

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The iGPU rail gets its power from four phases made up for the same IR3555 50A fully integrated power stages that the CPU VCore VRM uses. It is also controlled by the same ASP1405, which should be an 8-phase IR35201 or equivalent.

The memory VRM consists of two phases, which use similar power stage components as ASUS ROG products such as the Maximus IX Formula. It's also controlled by the ASUS ASM1103, but it's not clear what chip is being rebranded.

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