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ASRock X299 Extreme4 (Intel X299) Motherboard Review (Page 3)

Steven Bassiri | Feb 11, 2018 at 10:00 am CST - 0 mins, 57 secs reading time for this page
Rating: 93%Manufacturer: ASRock

Circuit Analysis

ASRock X299 Extreme4 (Intel X299) Motherboard Review 21 | TweakTown.com

Let's see what the motherboard is hiding under its heat sinks.

ASRock X299 Extreme4 (Intel X299) Motherboard Review 22 | TweakTown.comASRock X299 Extreme4 (Intel X299) Motherboard Review 23 | TweakTown.com

The CPU VRM is in a 10+1 phase configuration, and it uses Intersil's brand new digital PWM the ISL69138, which offers up to 7 phases in flex mode. It is in a five-phase mode and doubled to 10 by adding two drivers on each PWM signal. Each phase uses a 60A inductor along with a Fairchild Semiconductor FDPC5030 PowerTrench Power Clip dual N-channel MOSFET, each rated for 25A. The VCCSA is also controlled by the CPU VRM PWM controller, so it's in 5+1 phase mode.

ASRock X299 Extreme4 (Intel X299) Motherboard Review 24 | TweakTown.comASRock X299 Extreme4 (Intel X299) Motherboard Review 25 | TweakTown.com

We also find that each phase gets an Intersil ISL6596 MOSFET driver located on the rear of the PCB, and we can see that every two drivers have their PWM inputs tied together, effectively doubling phase count from 5 to 10. The VCCIO uses a single phase VRM with an Anpec APW8720 PWM with integrated driver along with one Fairchild FDPC5030.

ASRock X299 Extreme4 (Intel X299) Motherboard Review 26 | TweakTown.comASRock X299 Extreme4 (Intel X299) Motherboard Review 27 | TweakTown.com

Each memory VRM uses two Fairchild FDPC5030 in two phases, and each is controlled by a UPI uP1674 PWM controller with integrated drivers.

Last updated: Nov 15, 2019 at 01:16 pm CST

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Steven Bassiri

ABOUT THE AUTHOR - Steven Bassiri

Steven went from a fledgling forum reader in 2003 to one of the internet's brightest tech stars by 2010. Armed with an information systems degree, a deep understanding of circuitry, and a passion for tech, Steven (handle Sin0822) enjoys sharing his deep knowledge with others. Steven details products down to the component level to highlight seldom explained, and often misunderstood architectures. Steven is also a highly decorated overclocker with several world records.

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