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ASRock Fatal1ty Z270 Gaming-ITX/ac Motherboard Review (Page 3)

By: Steven Bassiri from Jan 23, 2017 @ 8:08 CST
TweakTown Rating: 93%Manufacturer: ASRock

Circuit Analysis

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The Z270 Gaming-ITX/ac's bare PCB exposes some really nice hardware.

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The motherboard's VRM is in a 6+2 phase configuration for the CPU VCore and CPU iGPU voltage rails. Each of the phases uses a Texas Instruments CSD87350D NexFET, which integrated the high and low-side MOSFETs into a single package. These NexFETs as well known throughout overclocking circles as great for overclocking.

ASRock is also using 60A inductors as well as 12K solid polymer capacitors for the output filter. The PWM controller is the International Rectifier IR35201, which is being used in 6+2 phase mode. It's also worth noting that ASRock is not using phase doubling, each phase gets its own PWM channel.

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ASRock is using IR3598 doublers/dual driver units in dual driver mode, so they are not being used as doublers. The memory VRM uses a single NexFET, which is the same model as those used in the CPU VRM.

The motherboard is much more revealing when you take off the shields and heat sinks.

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