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Antec Phantom DP502 Fans

Ignore MSI and Fan Control software

Fan control
click for motherboard connection details MSI BIOS can sort DC (3-wire) vs PWM (4-wire) fans:

motherboard manual (page 42)

reboot into BIOS:  shutdown /r /fw /f /t 0

YouTube:

Airflow

click for details

power supply
Separately from other case airflow, its fan draws air in thru Antec bottom case filter, exhausting out back.
case fan arrows
molded into fans, blade rotation and airflow directions
  • most case fans have label on hub:  input side
  • unlabeled motor location spider is typically on the exhaust side
  • Both Antec fans have label on (exhaust) motor location spider;
  • one Antec fan has blades reversed...

    • 5 Arctic 3-wire fans are plugged into Antec's fan and LED controller,
    which can control speed for up to six 3-wire fans
    from a single PWM (4-wire) motherboard fan control as FAN6

    3 front input Arctic fans   see BIOS FAN settings
    exhausting into Antec case front filter
    attached to motherboard FAN6
    2 top exhaust Arctic fans
    mounted behind 5.25-inch optical drive
    attached to motherboard FAN6
    1 rear case exhaust Antec fan
    mounted backwards, as received..
    replaced by Scythe KazeFlex 120 PWM fan
    attached to motherboard SYS_FAN1
    1 chamber Antec fan
    mounted above PSU chamber, drawing air from lower front input,
    exhausting to GPU;  attached to motherboard FAN4
    1 PWM ID-Cooling fan
    exhausting into heat sink fin stack
    attached to motherboard CPU_FAN1
    BIOS FAN settings in Hardware Monitor   see Fan control
    CPU fan (CPU_FAN1) defaulted to Auto and around 790rpm;
  • switched to PWM.
    Back fan (SYS_FAN1) defaulted to DC and ~ 950 rpm
  • switched to smart based on CPU temp
      0% @34C, 8% @46C, 90% @70C ~ 936rpm @39C
    Antec fan controller (SYS_FAN6) defaulted to DC and ~ 1800rpm,
  • switched to PWM and smart based on System..
      around 15% still reports 1090rpm and louder than wanted...
    Antec DC chamber fan (SYS_FAN4)
  • switched to smart based on PCH

    MSI Center fan tuning:
    Features > User Scenario > (Fan on) > Customize (clover)
    CPU Fan

    24 Aug 2023:  KazeFlex 120 PWM fan replaced rear Antec fan
      reconfigured SYSFan1 to PWM in BIOS;
      new SYSFan1,5,6 curves for reduced idle noise  
    Fan1:  rear exhaust now Scythe KazeFlex PWM


    Fan5:  Antec chamber fan below GPU


    Fan6:  5 Artic fans by Antec controller

    Antec controller poorly matches Arctic case fans,
    which run fast at very low PWM % needed for quiet low load operation.
    Replacing puny stock Antec fan with Scythe's KazeFlex significantly altered airflow;
    most heat now flows out PC rear instead of top, with less noise.
    Case air pressure may now be negative,
    wanting top exhaust fans driven separately from front intake fans.

    • maintained by blekenbleu