ASUS Z270 Fan Header Offering
The ASUS Maximus IX Apex is a very loaded motherboard, and it has tons of fan headers built in. Most of the headers are hybrid PWM/DC fans, except for three headers are do full speed on both voltage and PWM mode fans. You can tell if an ASUS header is hybrid or PWM because on their full speed fans they list 12v as the voltage on the power pin, and on the hybrid, it's labeled as fan power. The Apex goes above and beyond for overclocking, and that is why they have full speed headers, it's not a common sight. The Apex also offers two temperature sensor inputs you can use as a reference for the cooling curve.
ASUS is also nice enough to give everyone is a full overview of the current and capabilities of their fans, we can even see which headers have shared control. ASUS also has a fan extension card, but not all ASUS motherboards support the card. The card provides many extra fans headers and temperature sensors, all of which can be programmed through the UEFI and software.
ASUS Z270 UEFI Offering
ASUS offers Qfan Tuning which goes and calibrates all of your fans. It's very useful for PWM fans and gives you the lower duty cycle so you can correctly set your low points for less noise.
ASUS's main type-in fan options include step up/down times, control mode, lower speed limit, fan profile with multiple steps with min/middle/max temperature and duty cycle limits. You can also use built-in fan profiles to control each header.
ASUS also has a GUI in their UEFI in case you prefer a graph. You can control all the headers through here, but fan-stop is only available for the system fans for safety (don't want your CPU fan to ever really stop).
ASUS Z270 Software Offering
ASUS's fan control in Windows is through their DIP5 program under FanXpert4. It also offers built-in calibration just like the UEFI.
The software also allows you to pick a position where the fan is for visualization. After calibrating you are given a percent power against RPMs. Here we have 40% at 826 RPM.
You can even let it spin up individual fans so you can hear where they are in the system for the positioning menu. One new feature ASUS is offering is the ability to hook up to three temperature sensors to be reference temperatures for your duty cycle points. So you can set either the CPU, VRM, or external sensor to trigger fan speed changes (if one goes high and the others don't the fan will follow the set guidelines).
Once we move deeper into the software, we find where to setup our curve along with spin up/down times, temperature sources, and even auto-stop. You can also manually set a fixed fan speed level.
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