Help Me to Cool My PC

bazingaa on 11/11/2022 - 10:42
Last edited 13/11/2022 - 22:16

Hi guys,

I have recently upgraded my work station and I would like to know any recommendations on installing some fans (any deals ?).

My casing is a Deepcool D-Shield V2 (https://www.deepcool.com/products/Cases/fulltowercases/2021/…)

Fan Support:

Front: 3×120 / 3×140mm
Top: 2×120 / 2×140mm
Rear: 1×120mm

Current Config :

CPU 5600x (I have PBO enabled all cores and CPU takes around 100 W sometime, it was around 75 W with before)
Cooler : ARCTIC Freezer 34 - Has 1 * 120 mm fan

GPU 1 : RTX 3090 - Has 3 fans

GPU 2 : RTX 3060 - Has 2 fans (I haven't installed this now, but planning to)

Exhaust : Rear: 1×120 mm Pre-installed with the casing

Intake : Front (middle): 1×90 mm (Coolermaster - my old PC's CPU Fan, goes around 4000 rpm) : Same as this https://www.ebay.com.au/itm/171092768072

Motherboard - B550M-DS3H , 3 fan headers, currently 3 fans are connected.

Edit:

Thanks guys, I got extra 4 fans and connected 2 for front intake and 2 for top exhaust. Did a power test with OCCT and temps are ok with 100% CPU + both GPU. Realistically, all 3 won't be at full load anyway.

ARCTIC BioniX P140 ($17.50) : max air flow = 77.6 CFM , Top exhaust above CPU, connected to CPU fan (ARCTIC P120) connector daisy chain https://www.amazon.com.au/dp/B084CJQNRT
all other 3 fans ($9 for all 3) are upHere 120mm NT12044, max air flow = 86.34CFM (watched a review video where they test the actual rates) and it was $9 for all 3 (https://www.amazon.com.au/dp/B09FF4RMTC)

Computing Computer Desktop Computer

Comments

  • FoxJump on 11/11/2022 - 10:43

    Can you put the computer in a bar fridge?

  • Fergy1987 on 11/11/2022 - 10:53
    +1

    it has 2 GPU's?

    • AustriaBargain on 11/11/2022 - 11:17
      +1

      That's pretty cool.

    • Chandler on 11/11/2022 - 11:23

      OP had issues trying to scalp them… /s

      • bazingaa on 11/11/2022 - 12:00
        +2

        I bought it used, probably from a miner :(

  • SnowDragon on 11/11/2022 - 11:35
    +1

    Any reason for the two GPUs? You can't even SLI them.

    The only thing I can think of is gaming on one and rendering on the other. Even then your CPU wouldn't like it.

    • bazingaa on 11/11/2022 - 12:06
      +1

      I don't game much but doing ML work. I was planning to keep 3090 for full training and 3060 for other work and display, and occasionally train on that as well.

  • scrimshaw on 11/11/2022 - 11:50
    +1

    Any computer with 2 GPU's will run hot. It's a challenge keeping two graphics cards cool because when you install them in the same motherboard inside a closed case, they'll just recycle the hot air between themselves. The bottom GPU heats up the air and the top GPU sucks in some of that warm air, and the processor (at the top) gets even warmer air before it makes an exit through the rear fans.

    The exception is when you have a blower style card, which sucks air from one end and expels hot air out the back of the case, but this design is rare nowadays.
    Or install a side panel fan which blows in fresh cool air from the side and directly at the GPU's, but your case needs to have a side panel vent.

    • bazingaa on 11/11/2022 - 12:04

      I was thinking about installing better fans on front to get fresh air and add more to push air from the top as exhaust. Would that be a solution ?
      I think CPU heats way lot when PBO is enabled than GPU. I might need to disable PBO on all cores.

      • scrimshaw on 11/11/2022 - 12:06
        +1

        If you want the CPU to get to cool air first, install an AIO cooler for the processor, then mount the radiator at FRONT of the case. The air will cool the CPU first, then the GPU second. Install more fans at the top or increase RPM to force the hot air to exit quicker.

        I also recommend taking a look at cases then have intake at the bottom. Lian-Li O11Air for instance. This will cool your GPU's directly because it sucks air thru bottom

        • bazingaa on 11/11/2022 - 12:14

          Thanks I will have a look. Actually it cools pretty much when I manually increase fan speed (GPU) or change fan curve (CPU/System), but doesn't kick GPU fans faster in normally. May be a silent mode BIOS ? . https://www.msi.com/Graphics-Card/GeForce-RTX-3090-GAMING-X-… says there are two BIOS and default is low noise one. I might need to flash "Low Temperature BIOS"

          When I got this casing, I searched a lot, I couldn't find any casings with 5.25" bays, this is a pretty big casing with E-ATX motherboard support and has 1 5.25" bay for ODD. I has a bottom vent but it is only for PSU fan.

          • scrimshaw on 11/11/2022 - 12:21

            @bazingaa: You can install MSI afterburner and tweak your own fan curves, if you want greater control on when the fans kick in. A curve that is flatter (gentler slope) will result in less whirring as the temperatures go up. Steeper curves will result in the fans being more responsive to small temp changes.

  • Bid Sniper on 11/11/2022 - 11:58
    +3
    1. Ditch 3060
    2. 240 AIO liquid cooler, mount to top of case pushing heat out
    • bazingaa on 11/11/2022 - 12:02

      I was planning to install fans on the top as exhaust as it is closer to CPU, wouldn't that be fine ?

      • Bid Sniper on 11/11/2022 - 12:08
        +1

        Might as well dump heat outside case directly using a AIO, stop CPU heat wash on GPU as well

        • bazingaa on 11/11/2022 - 12:15

          Thanks I will have a look. :)

  • Sleeqb7 on 11/11/2022 - 12:45
    +1

    Honestly cooling two GPUs isn't that hard, I had 2 x GTX970s in a HTPC case and didn't run into thermal limits.
    A couple of good fans in the front as intakes and a couple on the top as exhausts, preferably with a cpu cooler either exhausting hair from the top or back.

    • scrimshaw on 11/11/2022 - 13:43
      +1

      RTX 3090 has a peak power consumption of 400 watts, while a single GTX970 consumes max 170w.

      Basically one RTX3090 consumes the power of two GTX 970's, so the heat output is not trivial.

      The OP has about 400 watt + 170 watts being used by the GPU's, assuming they will actually be running something that will tax both equally.

      • Sleeqb7 on 11/11/2022 - 13:50
        +1

        Yeah, but there is a colossal air moving difference between a proper case and a HTPC case. Doubly so for a HTPC case with 2 gaming video cards and a non-modular PSU. Of which I also used an AMD Bulldozer series CPU.

        I don't think it's a trivial amount of heat, but frankly a semi decent modern case with 4-5 fans will cover it fairly easily.

        • bazingaa on 11/11/2022 - 13:52

          I was thinking about adding 2 * ARCTIC P12-120 mm in the top as exhaust as a test, what do you think ? would it be enough ?

          • Sleeqb7 on 11/11/2022 - 14:05
            +1

            @bazingaa: Only if you have a semi decent modern case, not the $55 crappy one you allegedly have. :P
            Preferably with a mesh front that can take 2 x 140mm, a top that can take 2 x 140mm, and a rear 120mm.

            I haven't been in the PC Hardware game for a number of years, so I don't know any off the top of my head, but something like this with 2 x 140mm for the top would likely be suitable;
            https://www.bpctech.com.au/product/cp510-kgnn-s00-cooler-mas…

        • scrimshaw on 11/11/2022 - 13:53
          +1

          The OP has a crappy $55 case that can support 3 intake fans at the front but it's being sucked through a small slit on the side because the front is completely solid, that would be the main issue for cooling.

          • bazingaa on 11/11/2022 - 13:54

            @scrimshaw: I got it for about $40 with a deal, I had no other option as I have a BD-RE drive, most new cases don't have 5.25" bays

      • bazingaa on 11/11/2022 - 13:51

        yeah, my 3090 is 370 W + 3060 is 170 W, I disabled CPU PBO so it is about 77 W, with PBO it was 100 W but performance gain is minimal.

  • WT on 11/11/2022 - 16:20
    +1

    use the 140 arctic PWM fans, they are good. If you care about life get the BB ones which are a touch louder but I doubt it will be as loud as your GPU fans

    if you put an AIO go the 280, if you use a lot of CPU power do push pull and buy 2 extra fans. I was running 150-177w (delid and liquid metal) on a 240 and it was getting a little toasty

    • bazingaa on 13/11/2022 - 22:13

      Thanks, my CPU fan is P120, and got another ARCTIC BioniX P140

  • Screamingeagle on 11/11/2022 - 17:18
    +1

    Cool the ambient temperature of the room down.

    • mu11yy on 12/11/2022 - 16:04
      +1

      Not possible when the room your PC is in has no air conditioning. Speaking for myself.

      • bazingaa on 13/11/2022 - 22:15
        +1

        yeah, I only have fan. moreover I am freezing here and have to use heaters most of the time, so PC can be used as a heater now :D

  • simplystu on 11/11/2022 - 22:02
    +1

    OP …
    I'm really not clued in on "Machine Learning" work - but hope my words may help.
    Also - the age old question … what games do you into intend to play (that will help with what GPU is required).

    you previously said "I don't game much but doing ML work. I was planning to keep 3090 for full training and 3060 for other work and display, and occasionally train on that as well."

    Perhaps you may be better off splitting into 2 separate systems.

    1x "Machine Learning" system (with 3090 + 32GB memory if standalone) … otherwise may need 64GB across both.
    1x general system (low end GPU + 16GB memory).

    As they clearly have 2 different use specifications/resource needs.
    Also, how much Memory are you putting in this (single) system you are planning to build ???

    [EDIT #2] …

    have you looked into cloud computing … EG. amazon EC2 instances / etc.
    the more that I have read about Machine Learning in the last 2 hours … is that (like many others) … going online.

    Amazon AWS also specifically markets towards the "ML" crowd (as per their website).
    Probably more of a high $ business budget - but worth looking at anyway.

    • bazingaa on 13/11/2022 - 22:10

      Thanks a lot for the detailed reply, I have setup everything and did a OCCT power test and it seems pretty stable now.

      I originally had 3060 with the system (5600x + B550M-DS3H + 32 GB RAM) and recently got an used 3090 and plugged in.

      In a multiple GPU setup, we can train multiple models in the same time in multiple GPUs, and it is always better to have more VRAM.
      From my experiments, 3090 is about 3x faster than the 3060 and has twice VRAM, but 3060 can still do significant training.
      When training deep learning models with GPU, CPU + RAM is not that much used unless for processing and loading data to VRAM.

  • Grunntt on 13/11/2022 - 12:21
    +1

    I had no other option as I have a BD-RE drive, most new cases don't have 5.25" bays

    Buy a USB case for the drive (~$20) and buy yourself a case with decent airflow.

    Don't waste your money on trying to cool it with more fans iin that crappy case.

    • bazingaa on 13/11/2022 - 21:55

      I had an USB BD-RE drive (laptop drive in USB-SATA adapter) but it was kinda unreliable when burning BD-R, BD-R are expensive to waste :/

  • bazingaa on 13/11/2022 - 21:54

    Thanks guys, I got extra 4 fans and connected 2 for front intake and 2 for top exhaust. Did a power test with OCCT and temps are ok with 100% CPU + both GPU. Realistically, all 3 won't be at full load anyway.

    ARCTIC BioniX P140 ($17.50) : max air flow = 77.6 CFM , Top exhaust above CPU, connected to CPU fan (ARCTIC P120) connector daisy chain https://www.amazon.com.au/dp/B084CJQNRT
    all other 3 fans ($9 for all 3) are upHere 120mm NT12044, max air flow = 86.34CFM (watched a review video where they test the actual rates) and it was $9 for all 3 (https://www.amazon.com.au/dp/B09FF4RMTC)

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