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ASUS SABERTOOTH Z170 MARK 1 (Intel Z170) Motherboard Review (Page 3)

By: Steven Bassiri from Oct 20, 2015 @ 9:14 CDT
TweakTown Rating: 94%Manufacturer: ASUS

Circuit Analysis


The SABERTOOTH Z170 MARK 1 looks nice.


This motherboard carries an 8+4+1+1 phase (VCore, VCCGT, VCCSA, VCCIO) VRM, but the VCCSA and VCCIO phases are much smaller regulators/POLs that are located below the CPU socket. ASUS has had their VRM components tested by a third party lab and are to MIL-STD (military standards). The VCore and iGPU outputs are from a single PWM and doubled outputs. The backside components are all from International Rectifier, so I would venture to guess the PWM is the IR35201, which is their latest digital PWM. There are then four IR3599 phase doublers and eight IR3535 drivers for the VCore and two IR3535 for the iGPU voltage.


The ASP1405 is most likely the IR35201 6+2 (or 8+0) phase PWM used in a 4+2 phase mode. The MOSFETs are high-quality PowerPAKs from ON Semiconductor the NTMFS4C06N and NTMFS4C09N. Each CPU VCore phase consists of three MOSFETs and a driver. Each driver for the iGPU output is hooked up to four MOSFETs and two inductors. This VRM is more than capable of handling most every Skylake overclock thrown at it. The VCCSA and VCCIO regulators are located below the CPU socket. A Texas Instruments TPS51362 is a POL that can supply up to 10A which is more than enough for the VCCSA, and the VCCIO uses an unidentified solution (switching or linear) but it is more than enough power, and I didn't have any issues.


This is the memory VRM; it is a two-phase VRM powered by an unknown Digi+ PWM. Both the fans are from SUNON and are high quality, one can even reverse to blow dust out. You will know which fan goes where when you go to install them since one is 35mm, and the other is 40mm.

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