EVGA H370 Stinger User Manual page 80

EVGA H370 Stinger (111-CS-E371)
Once into the H/W Monitor section, you can see the temperature monitors across the
top. Below the monitors are the two PWM fans with SMART controls: CPU1_FAN
and CPU2_FAN. Each fan is set to "Smart," which means the PWM controller uses a
Smart curve for fan controls. To set a Smart curve, please see the guide starting at the
top of the next page. The +/- buttons next to Smart allow you to set your fans at a static
speed percentage, instead of a curve. If you set the speed too low, however, the fan may
stall; the stall speed will vary from fan to fan.
Note: If using an AIO CPU liquid cooler, such as the EVGA CLC Coolers, it is
recommended to connect this to a CPU header, and set the speed to MAX. If
left on SMART or lower than MAX, the cooler may not be recognized properly
by the operating system or its software may not function properly.
Below the fans, you will see the remaining PWM fan: CHA_FAN. This fan can only be
set to a static speed percentage. Again, if you set the speed too low, however, the fan
may stall. The stall speed will vary from fan to fan.
The H370 Stinger fan controller auto-detects whether each fan connected to the PWM
headers are controlled by DC or PWM, and sets the control mode accordingly. DC fans
are still supported, but are controlled entirely by reducing the amount of current
provided to the fan based on the static percentage set in the BIOS plus the fan's
maximum speed and power. PWM fans are controlled by a PWM signal, which
constantly pulses speed instructions to the fan based on the static percentage set in the
BIOS and the fan's maximum speed; this permits the fan to run with sufficient power -
even at low speeds - to avoid a stall. Fans utilizing a PWM header can still be controlled
via PWM signals, even if the fan is powered by a different connector, such as a molex,
SATA, or 3-pin power connector not directly connected to the motherboard.
Note: If you do not attach a fan prior to power on, the fan may run at 100% or
behave erratically, regardless of the static percentage set in BIOS.
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