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I'm not sure how you avoid condensation damaging your motherboard at that temp?

by xupybd 5y ago

giuliomagnifico 5y ago
Insulation. Here you can see the motherboard getting prepared for LN2 overlock: https://www.tomshardware.com/reviews/overclocking-amd-ryzen-ln2,5116-2.html https://www.tomshardware.com/reviews/overclocking-amd-ryzen-...
Dylan16807 5y ago
You cover it with kneaded eraser or petroleum jelly or some other sealer, and cover that with lots of towels.
megous 5y ago
You can see on the pictures the MB is modded to avoid this.
xxs 5y ago
you prepare it using wax/conformal coating (+towels) - it's quite a standard procedure for sub-ambient cooling.
wyldfire 5y ago
You could use one of those non-conductive liquids [1]. They have products with pour points going down below -100C. Depending on the interface between the liquid nitrogen and the coolant it might still flow well. [1] https://www.3m.com/3M/en_US/data-center-us/applications/immersion-cooling/ https://www.3m.com/3M/en_US/data-center-us/applications/imme...
cl0ckt0wer 5y ago
If you're interested, here's a video of when a youtuber did it live on a 5900x about a year ago. They go into fine detail about the process. https://www.youtube.com/watch?v=ISmyfzlf8SY https://www.youtube.com/watch?v=ISmyfzlf8SY
- WaxProlix 5y ago
  5950X* And it's GN, a very rigorous testing, review, teardown channel with a team behind them. Feels like "a youtuber" sort of does em a bit of injustice :)
  - svnpenn 5y ago
    Saying GN doesn't really mean anything, unless you already know who they are, which obviously the person you replied to doesn't.
    - WaxProlix 5y ago
      It's just their name; saying anything else would be equally meaningless. The point was just that it's a well regarded name within the 'scene'.
      - miffe 5y ago
        Their name is Gamers Nexus...
- xupybd 5y ago
  Thanks that answers my question. Much appreciated .
gnopgnip 5y ago
You use Vaseline, electrical tape and duct tape, paper towels, and good airflow for extreme overclocking. And there will be condensation, but a motherboard won’t last long anyways, burnt out vrms and fried cpus
- olddustytrail 5y ago
blackoil 5y ago
Can extremely dry air be used for it, or will it have some other side effects on Thermal conductivity?
c_o_n_v_e_x 5y ago
You apply a conformal coating to the PCB.
Ratiofarmings 5y ago
Well, partially with good insulation, Vaseline or plastidip coating. And partially, you just don't. It'll freeze over and since this is for competition and not daily use, that is okay. Usually nothing gets damaged, sometimes it does. Extreme OC is expensive.
kllrnohj 5y ago
The other answers all cover the prep, but the other key part here is you just don't run like this for very long. You run in like 1 hour bursts, and let everything dry out (and warm back up) between runs. So you're just not giving condensation enough time to build up enough to cause shorts in the areas that are not fully sealed off, or at least that's what you're banking on.

I'm not sure how you avoid condensation damaging your motherboard at that temp?

by xupybd 5y ago

I'm not sure how you avoid condensation damaging your motherboard at that temp?

Insulation. Here you can see the motherboard getting prepared for LN2 overlock: https://www.tomshardware.com/reviews/overclocking-amd-ryzen-ln2,5116-2.html https://www.tomshardware.com/reviews/overclocking-amd-ryzen-...

Dylan16807 5y ago

You cover it with kneaded eraser or petroleum jelly or some other sealer, and cover that with lots of towels.

megous 5y ago

You can see on the pictures the MB is modded to avoid this.

xxs 5y ago

you prepare it using wax/conformal coating (+towels) - it's quite a standard procedure for sub-ambient cooling.

wyldfire 5y ago

You could use one of those non-conductive liquids [1]. They have products with pour points going down below -100C. Depending on the interface between the liquid nitrogen and the coolant it might still flow well. [1] https://www.3m.com/3M/en_US/data-center-us/applications/immersion-cooling/ https://www.3m.com/3M/en_US/data-center-us/applications/imme...

cl0ckt0wer 5y ago

If you're interested, here's a video of when a youtuber did it live on a 5900x about a year ago. They go into fine detail about the process. https://www.youtube.com/watch?v=ISmyfzlf8SY https://www.youtube.com/watch?v=ISmyfzlf8SY

WaxProlix 5y ago
5950X* And it's GN, a very rigorous testing, review, teardown channel with a team behind them. Feels like "a youtuber" sort of does em a bit of injustice :)
- svnpenn 5y ago
  Saying GN doesn't really mean anything, unless you already know who they are, which obviously the person you replied to doesn't.
  - WaxProlix 5y ago
    It's just their name; saying anything else would be equally meaningless. The point was just that it's a well regarded name within the 'scene'.
    - miffe 5y ago
      Their name is Gamers Nexus...
xupybd 5y ago
Thanks that answers my question. Much appreciated .

gnopgnip 5y ago

You use Vaseline, electrical tape and duct tape, paper towels, and good airflow for extreme overclocking. And there will be condensation, but a motherboard won’t last long anyways, burnt out vrms and fried cpus

olddustytrail 5y ago

blackoil 5y ago

Can extremely dry air be used for it, or will it have some other side effects on Thermal conductivity?

c_o_n_v_e_x 5y ago

You apply a conformal coating to the PCB.

Ratiofarmings 5y ago

Well, partially with good insulation, Vaseline or plastidip coating. And partially, you just don't. It'll freeze over and since this is for competition and not daily use, that is okay. Usually nothing gets damaged, sometimes it does. Extreme OC is expensive.

kllrnohj 5y ago

The other answers all cover the prep, but the other key part here is you just don't run like this for very long. You run in like 1 hour bursts, and let everything dry out (and warm back up) between runs. So you're just not giving condensation enough time to build up enough to cause shorts in the areas that are not fully sealed off, or at least that's what you're banking on.