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GIGABYTE Z390 Aorus Pro (Intel Z390) Motherboard Review (Page 3)

By Steven Bassiri from Dec 12, 2018 @ 10:00 CST
TweakTown Rating: 92%Manufacturer: GIGABYTE

Circuit Analysis

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The Z390 Aorus Pro shows us the goods with the heat sinks removed!

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The VRM is a large 12+1 phase VRM with the CPU and iGPU power rails using the Intersil ISL69138 in 6+1 phase mode, and doublers on the rear (ISL6617) work in synchronous mode and are used for current balancing the DrMOS. The Vishay SiC632 is used for the iGPU, while the SiC634 are used for the 12 VCore power stages. The SiC634 and SiC632 are both rated for 50A, but the VCore ones are slightly better.

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The VCCSA and VCCIO are controlled by Richtek RT8120 single phase PWMs with integrated drivers, and they control some miniature On Semiconductor PowerPAKs labeled "4C06". The memory VRM uses the same Richtek PWMs, but with larger On Semiconductor "4C06N" N-channel PowerPAKs in a two low single high configuration.

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