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How many fans do I need?

Hi,

I am currently in the process of building my first gaming computer. I have a Asus Rx 580 8gb Gpu, Ryzen 5 1600, 16gb ddr4, and a micro atx motherboard. My case only comes with 1 rear fan, so I will need more cooling. However, my motherboard only has 1 spot for a cpu fan and 2 spots for others. Ideally, I would like to have 3-4 fans in my build. Do I need this many fans? I am not going to overclock because it is my first build. I also am worried about noise if I purchase a fan hub. What Fans do you recommend? How many do I need? I am also on a budget, so I don't exactly want to spend a lot of money. Any feedback is appreciated, thanks
9 answers Last reply Best Answer
More about fans
  1. you can buy a splitter and put 2 fans per fan header. 3 is fine if you really needed to.
  2. I like to have around 3 fans, 2 intake and 1 exhaust. More fans does not automatically translate to better cooling.
    You could use fan splitters cables, like these ones, if you want to add fans but there aren't enough fan headers on the board.
    It will depend on your case and how is the air flow inside of it.
    Which case do you have?
  3. 3 would work but I would have 2 intake and exhaust if you can
  4. jojesa said:
    I like to have around 3 fans, 2 intake and 1 exhaust. More fans does not automatically translate to better cooling.
    You could use fan splitters cables, like these ones, if you want to add fans but there aren't enough fan headers on the board.
    It will depend on your case and how is the air flow inside of it.
    Which case do you have?


    Cooler Master Q300L, will the fans run at full speed with the splitter?
    Also, one of the motherboard spots labeled CHA_Fan2 only has 3 pins?
    Will those adapters work with any fans or do I need to buy special ones. Sorry I'm a noob at this, gotta start somewhere I guess.
  5. Yes up to 3 will run full speed per header. Put the CPU fan by itself
  6. thetrashvaletwingfield said:

    Cooler Master Q300L, will the fans run at full speed with the splitter?
    Also, one of the motherboard spots labeled CHA_Fan2 only has 3 pins?
    Will those adapters work with any fans or do I need to buy special ones. Sorry I'm a noob at this, gotta start somewhere I guess.

    On that case I would go with at least 3 fans: 2 intake (front) and 1 exhaust (rear).
    If you go with 4, place 2 in the front, 1 top and 1 rear.
  7. jojesa said:
    thetrashvaletwingfield said:

    Cooler Master Q300L, will the fans run at full speed with the splitter?
    Also, one of the motherboard spots labeled CHA_Fan2 only has 3 pins?
    Will those adapters work with any fans or do I need to buy special ones. Sorry I'm a noob at this, gotta start somewhere I guess.

    On that case I would go with at least 3 fans: 2 intake (front) and 1 exhaust (rear).
    If you go with 4, place 2 in the front, 1 top and 1 rear.


    Also, one of the motherboard spots labeled CHA_Fan2 only has 3 pins? should I just buy one 3 pin fan and 2 four pin? sorry I'm confused.
    Will those adapters work with any fans or do I need to buy special ones.
  8. All fans will work with 3 or 4 pins. The 4th pin is control so 3 pins will run max speed
  9. Best answer
    thetrashvaletwingfield said:

    will the fans run at full speed with the splitter?

    If you connect a 3-pin using a 3-pin it could be controlled by the motherboard...all the fans will run at the same speed

    thetrashvaletwingfield said:
    Also, one of the motherboard spots labeled CHA_Fan2 only has 3 pins?

    When you connect a fan to CHA_Fan2 header, the fan type will be auto detected by the system. You won't need to set the mode (DC or PWM) manually in the BIOS.
    A 3-pin fan, connected to a 3-pin header is usually controlled by voltage (DC) and a 4-pin fan connected to a 4-pin header is controlled by pulses (PWM) to control motor speed.

    thetrashvaletwingfield said:
    Will those adapters work with any fans or do I need to buy special ones. Sorry I'm a noob at this, gotta start somewhere I guess.


    It depends on the description of the items you are getting.
    If you get these Cooler Master fans @ newegg , you could connect 3 of them into one fan header using this fan splitter @ newegg and they could be set to run at lower speed in the BIOS.
    At regular speed they are very quiet.
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