windam (Nexcom NDiS B842)

Bought as a stripped machine (No CPU, RAM, or drives). Ended up buying a lot of 16 AMD R-464L processors because that was the best deal I could find on a compatible CPU. Fortunately the heatsink was still included. It's an odd heatsink that spans the chassis and sits between two pairs of fans.

This machine has a single long heatsink spanning the chassis width, with two pairs of fans (in/out) on either end to create a airflow channel through the heatsink. Each pair is controlled together. The BIOS is really poor about fan ramping. It seems to follow CPU load very closely and runs the fans at very high RPM. These are 40mm fans capabable of ~7500 RPM.

I followed this archwiki guide. I didn't bother to differentiate between intake/outtake fans, but I wanted to consider both the CPU and GPU for cooling. The fancontrol config is probably more confusing than helpful but I'll include it for reference then explain below:

# Configuration file generated by pwmconfig, changes will be lost
INTERVAL=10
DEVPATH=hwmon0=devices/pci0000:00/0000:00:02.0/0000:01:00.0 hwmon1=devices/platform/nct6775.1328 hwmon2=devices/pci0000:00/0000:00:18.3
DEVNAME=hwmon0=radeon hwmon1=nct6106 hwmon2=k10temp
FCTEMPS=hwmon1/pwm2=hwmon0/temp1_input hwmon1/pwm1=hwmon2/temp1_input
FCFANS=hwmon1/pwm2=hwmon1/fan2_input hwmon1/pwm1=hwmon1/fan1_input
MINTEMP=hwmon1/pwm2=20 hwmon1/pwm1=20
MAXTEMP=hwmon1/pwm2=70 hwmon1/pwm1=85
MINSTART=hwmon1/pwm2=150 hwmon1/pwm1=150
MINSTOP=hwmon1/pwm2=0 hwmon1/pwm1=0
MAXPWM=hwmon1/pwm2=180 hwmon1/pwm1=180

One fan pair is controlled by the GPU temp. I set a range of 20-85 °C. The other by the CPU temp with a range of 20-70 °C. I set MAXPWM to 180 on both.