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ASRock Fatal1ty Z270 Gaming i7 Motherboard Review

By: Steven Bassiri | Socket LGA 1150/1151 in Motherboards | Posted: Feb 22, 2017 2:24 pm
TweakTown Rating: 93%Manufacturer: ASRock

Circuit Analysis

 

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The Fatal1ty Z270 Gaming i7 has so much hardware you can only see with the heat sinks removed.

 

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The VRM on this motherboard is in an 8+4 phase configuration for the CPU VCore and iGPU. Starting from the phases at the bottom in the image and moving up and then to the left, the first four are for the iGPU, the next eight are for the VCore, then you have a phase for the VCCSA, and then one more for the VCCIO. The eight CPU phases and four iGPU phases are doubled from the 4+2 phase output of the IR35201. The IR35201 is a 6+2 or 8+0 phase PWM, and it's being using in a 4+2 phase mode.

 

All the CPU phases, including iGPU, VCore, VCCSA, and VCCIO use Texas Instruments NexFET CSD87350 dual N-Channel MOSFETs. Both the PWM and the NexFETs are well known in overclocking circles for quality and high output. The inductors are 60A inductors, and the capacitors are 12K solid polymers.

 

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For the drivers and doublers, the IR3598 doubler/dual-driver chips are used. Six of these reside on the backside of the PCB, four for the VCore and two for the iGPU. The memory VRM uses a uP1674P PWM to control two CSD87350 NexFETs, which is the same configuration as the Z170 OC Formula.

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