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  1. #1
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    Advice - Better cooling for VRM,Mosfet,chokes etc

    So I'm taking my mobo (Asus Z97 Hero) out to fit the I/O shield that was shipped seperatly, and while I'm at it I'll be redoing my CPU's TIM & I'm thinking of redoing the TIM under the PCH & choke+VRM+ heatsinks. Looking for any advice / do's or don't regarding this? I do have a static fan above the board, which exhaust's excess hot air. I'm toying with the idea of putting some TIM (CM Maker Nano Diamond - http://www.coolermaster.com/cooling/...stergel-maker/ ) between the VRM's + chokes etc and the stock passive heatsink. I'v also got some decent looking healsinks from other mid-high end boards which I can chop up to cool the capacitors.

    Q - would it be better to cut some heatsinks up, & put small bits on each capacitor, or a large but flatish heatsink that would cover all of the 12 caps to the immediate left of the CPU socket? Theory says, > volume of surface area = cooler cap's.


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  2. #2
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    Re: Advice - Better cooling for VRM,Mosfet,chokes etc

    4770K @ 4.6Ghz | Noctua D14 | Maximus Z97 Hero | 2x 8GB Dominator Platinum 1866Mhz @ 2,1Ghz | 960 Evo 250GB NVME | WD Red 3TB | 620W CM M-Pro semi-modular | Corsair 600T | K95 RGB | Razer Orochi.

  3. #3
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    Re: Advice - Better cooling for VRM,Mosfet,chokes etc

    How hot do the caps run whilst under load? You have a infrared thermometer on hand to test by any chance?

    I'd hazard a guess that 90% of the area heat would come from your MOSFET's and VRM's and that the caps should be mildly warm to the touch, but if you'd like to cool them down some more then maybe some small heatsinks would do the trick? Ones that are meant for a Raspberry Pi should work fine:

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  4. #4
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    Re: Advice - Better cooling for VRM,Mosfet,chokes etc

    Thanx, as mentioned I'v got decent dead mobo's to canabalise some heatsinks from (~20 mobo's) . Would thermal glue or highquality thermal pads be better to allow heat transfer?

    My thinking is that cooling the entire area will (hopefully) get me some extra OC stabilty / headroom.

    Going to cut some heatsinks and make something like this for the cap's.

    Quote Originally Posted by PhireSide View Post
    How hot do the caps run whilst under load? You have a infrared thermometer on hand to test by any chance?

    I'd hazard a guess that 90% of the area heat would come from your MOSFET's and VRM's and that the caps should be mildly warm to the touch, but if you'd like to cool them down some more then maybe some small heatsinks would do the trick? Ones that are meant for a Raspberry Pi should work fine:
    Last edited by souljazk; 14-12-2017 at 08:39 AM.
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  5. #5
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    Re: Advice - Better cooling for VRM,Mosfet,chokes etc

    You don't need to cool the capacitors, you're just going to make a mess.
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  6. #6
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    Re: Advice - Better cooling for VRM,Mosfet,chokes etc

    There are many thing's we don't need

    This is just a "keep me busy" mini project until my 1070Ti arrives You'll be surprised how warm/hot the CAPS get , esp with the excess heat of the VRM's etc & limited airflow.

    Quote Originally Posted by ScottulusMaximus View Post
    You don't need to cool the capacitors, you're just going to make a mess.
    Last edited by souljazk; 15-12-2017 at 07:32 PM.
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  7. #7
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    Re: Advice - Better cooling for VRM,Mosfet,chokes etc

    Have you measured the VRM temps while stress testing after overclocking?

    You can just get away with a fan blowing on the stock heat sink.

    But if you really have to do something then a fin/pin type heat sink with maximum surface area is your best bet.
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