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Are these fans enough?

Discussion in 'Overclocking & Cooling' started by EmperorClone, Nov 30, 2018.

  1. EmperorClone

    Associate

    Joined: Nov 16, 2018

    Posts: 11

    Hi all,

    I have a machine with the following specs:
    • i7-6700
    • GTX 1080
    • 16GB RAM
    • B150 PC MATE Mobo
    Housed inside an NZXT H440 case. I've upgraded the stock front fans to Corsair ML120s (3 x 120mm),
    I've added top fans (Corsair ML140) 2 x 140mm, and want to upgrade the back exhaust fan to a ML140 Pro.

    I'm getting the current idle temperatures:
    Cores: 20°C - 34°C
    GPU: 49°C

    The GPU temperature goes up under load to around 60-70°C.

    Is this okay? Do I need to make any further upgrades to the fans/airflow? I want this rig to last as long as possible and to not have any issues around temperature.

    Addendum:
    **note on the ML120s, these are 4 pin fans. I've connected them to 3 pins the stock fans were connected to. Will this cause any issues?**
     
  2. ttaskmaster

    Suspended

    Joined: Sep 11, 2013

    Posts: 8,859

    NVM
     
    Last edited: Oct 26, 2019
  3. EmperorClone

    Associate

    Joined: Nov 16, 2018

    Posts: 11

    Top fans are exhaust, front fans are intake.

    Temperature of room is (average) 21°C

    I had considered having the 3 front and 2 top be intakes because of how powerful they are, but I thought it would make sense to push air from the front and out at the top and back.

    I'm open to be corrected about my setup/decisions.
     
  4. OLDPHART

    Soldato

    Joined: Jun 19, 2004

    Posts: 6,515

    Location: n/east-the toon

    Take the side panel off and see if it makes a difference to your temps under load.

    If they drop your case air low needs improving.
     
  5. EmperorClone

    Associate

    Joined: Nov 16, 2018

    Posts: 11

    That's great help, thanks. I'll test it out tonight while streaming.

    As an aside, I've put 4 pin fans into 3 pin connectors. Is this okay?
     
  6. foster grant

    Soldato

    Joined: May 10, 2012

    Posts: 5,761

    Location: North London

    Those NZXT H440s are not so good for airflow, and that 1080 @49c is way too hot at idle , are the GPU fans even runing ?
     
  7. ttaskmaster

    Suspended

    Joined: Sep 11, 2013

    Posts: 8,859

    NVM
     
    Last edited: Oct 26, 2019
  8. doyll

    Sgarrista

    Joined: Jul 1, 2011

    Posts: 7,694

    Your temps are not really too hot.

    I would either use the 2x ML140 or 3x ML120 fans as front intakes with all holes in fan mounting panel not covered by them blocked off so the air they push into case does not leak back in front. Also remove all PCIe back slot covers to increase the rear vent area around the GPU and thereby improve front to back airflow around GPU thus moving the heated air coming out of GPU back and out of case. I don't recommend top intakes unless things are really bad and there is no other way to get cool air into case. 2x140 / 3x120 front intakes should supply enough airflow even with the restrictive front, but if not maybe and intake in the front most top vent. With good fans like the MLs' you shouldn't need any exhaust fans. Simple physics says whatever air is pushing into case has to flow out. Using intake/ exhaust case fans is like using push/pull cooler or radiator fans .. they usually make more noise and only lower temps 1-2c.
     
  9. WantoN

    Capodecina

    Joined: Jun 11, 2003

    Posts: 10,137

    Location: Hampshire

    If the gpu is switching fans off at idle, then your temps are fine. Load temps are definitely ok.

    Your fan orientation is the correct one, though I’d make sure the front fans are running faster than the exhaust if you want positive air pressure.