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GIGABYTE X170-Extreme ECC (Intel C236) Motherboard Review

By: Steven Bassiri | Socket LGA 1150/1151 in Motherboards | Posted: Jun 10, 2016 4:11 pm
TweakTown Rating: 92%Manufacturer: GIGABYTE

Circuit Analysis




This motherboard looks really good without the heat sinks; the silkscreen is really nice.





X170-Extreme ECC has an 8+3 phase VRM for the CPU core and iGPU. In this case, each PWM phase is controlling two switching nodes (high-side FET, low-side FET(s), and inductor). It results in more switching components, but also the ability to handle much higher power requirements and run cooler at higher loads.




The VRM is controlled by an Intersil ISL95856 Hybrid Digital PWM with multiple outputs and integrated drivers. The CPU VR utilizes four phases from the PWM, two of which have driver outputs from the PWM and two ISL6625A ("5AZ") drivers are used to supplement the phase count to four. The iGPU phases get one integrated driver and two ISL6625A. Vishay SiRA12 are used for the low-side and Vishay SiRA18 are used for the high side. Each phase for the CPU and iGPU gets one of each. GIGABYTE is using custom inductors with the Power logo on it, and their custom 10K polymer capacitors for the output filter. The VCCSA and VCCIO come from a linear regulator like on many other GIGABYTE Z170 motherboards.




The memory VRM is a single phase controlled by a Richtek single phase PWM with drivers. There are two low-side MOSFETs and a single high-side for this single phase memory VRM, and they do the job just fine.

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