CPU in a Vacuum Chamber?

[Karmadyota]

What would be the improvements or deterioration of CPU temps in the following situations in an isolated vacuum chamber.

1. High Pressure

2. Normal Pressure/ Moderate Low Pressure

3. Low pressure

And in Vaccum cpu's gonna burn hahah

Below is a basic diagram of how this things going to happen.  

[GrockleTD]

i think if it had to be either low or high i would go for high, as it would probably improve the thermal conductivity of the air, however would be harder on the fans. so, basically cooling stuff is designed to work in air that is the density of air.

[Karmadyota]

1 minute ago, Grockle88 said:

i think if it had to be either low or high i would go for high, as it would probably improve the thermal conductivity of the air, however would be harder on the fans. so, basically cooling stuff is designed to work in air that is the density of air.

 Lower Pressure in Air tends to be more temp. friendly as it cools or heats up much more quickly.

 

[GoldenLag]

Computer electronics in a vacuum are generally a bad idea as Gold might "phantom-weld" itself and create a short-circuit. "Phantom-weld" is just a name i used tl describe the phenomenom when gold and other metals actually weld themselves to other metalls im a vacuum and ia real concern when having electronics in space

[ScratchCat]

13 minutes ago, Karmadyota said:

 Lower Pressure in Air tends to be more temp. friendly as it cools or heats up much more quickly.

 

That is worse, you want something which has a high specific heat capacity per unit volume so the amount of air you need to move past the cooling unit to absorb a given amount of energy is lower. That is why water does not need to be moved as quickly as air to have the same effect even though the transfer surface area is smaller.

[ScratchCat]

2 minutes ago, GoldenLag said:

Computer electronics in a vacuum are generally a bad idea as Gold might "phantom-weld" itself and create a short-circuit. "Phantom-weld" is just a name i used tl describe the phenomenom when gold and other metals actually weld themselves to other metalls im a vacuum and ia real concern when having electronics in space

Paint the things in a plastic to prevent metal on metal contact?

[Blasteque]

Regular refrigeration would be much easier than maintaining high or low pressures.

[Karmadyota]

4 minutes ago, GoldenLag said:

Computer electronics in a vacuum are generally a bad idea as Gold might "phantom-weld" itself and create a short-circuit. "Phantom-weld" is just a name i used tl describe the phenomenom when gold and other metals actually weld themselves to other metalls im a vacuum and ia real concern when having electronics in space

I know in Vacuum things are different and there no way that heat will be exchanged so it ll end up fusing by that heat.

But what about high pressure and low pressure.

 

[Karmadyota]

5 minutes ago, ScratchCat said:

That is worse, you want something which has a high specific heat capacity per unit volume so the amount of air you need to move past the cooling unit to absorb a given amount of energy is lower. That is why water does not need to be moved as quickly as air to have the same effect even though the transfer surface area is smaller.

So overall conclusion?

[Sauron]

Low pressure air just means there is less material for the heat to dissipate to... high pressure might improve thermals a little but water cooling would be infinitely more efficient.

[GoldenLag]

3 minutes ago, ScratchCat said:

Paint the things in a plastic to prevent metal on metal contact?

Might work, but it might happen insode the Mobo in locations. Intel CPUs would be more at risk, same with threadripper due to a LGA socket i believe.

[Blasteque]

Just now, Karmadyota said:

So overall conclusion?

The gain from higher pressure is the higher density.  You can achieve higher density without higher pressure by using a higher density gas like argon or carbon dioxide.

 

My conclusion would be that there are easier ways of doing this than higher pressure.

[GoldenLag]

2 minutes ago, Karmadyota said:

I know in Vacuum things are different and there no way that heat will be exchanged so it ll end up fusing by that heat.

But what about high pressure and low pressure.

 

At higher pressure i would something else than air. Probably an inert gass like Xenon, nitrogen or Argon or Neon (not helium due to leakage) then you can crank up the pressure. It should allow flr better cooling over the fins. 

[Karmadyota]

6 minutes ago, Blasteque said:

Regular refrigeration would be much easier than maintaining high or low pressures.

The heat is not going anywhere in a refrigarator but acc to my diagram i am exchanging heat via something. It's not an isolated environment

[GrockleTD]

i still want to see a gpu with an integrated refrigeration unit in a perhaps 3 slot founders style card.

[GoldenLag]

Just now, Grockle88 said:

i still want to see a gpu with an integrated refrigeration unit in a perhaps 3 slot founders style card.

No....... 6 phase cooling with 6 slot hybrid cards with multiple 240 mm radiators

[GrockleTD]

1 hour ago, GoldenLag said:

No....... 6 phase cooling with 6 slot hybrid cards with multiple 240 mm radiators

...waht?

[GoldenLag]

2 minutes ago, Grockle88 said:

...waht?

The more phases you have the cooler it gets. Its like refrigiration but with extra steps. Thats how they get down to -260*C and almost 0*Kelvin

[Taf the Ghost]

9 minutes ago, Sauron said:

Low pressure air just means there is less material for the heat to dissipate to... high pressure might improve thermals a little but water cooling would be infinitely more efficient.

Vacuums are actually massive insulators.

[GrockleTD]

1 hour ago, Taf the Ghost said:

Vacuums are actually massive insulators.

example: https://www.amazon.com/Thermos-Stainless-Beverage-Bottle-Midnight/dp/B0017IHRNM

[Sauron]

27 minutes ago, Taf the Ghost said:

Vacuums are actually massive insulators.

...that's what I said...?

[ScratchCat]

3 hours ago, Karmadyota said:

So overall conclusion?

The higher the pressure the cooler the system can run if the heat generated from compression is removed. Note that other factors will come into account such as decreased flow rate due to higher density.

3 hours ago, GoldenLag said:

Might work, but it might happen insode the Mobo in locations. Intel CPUs would be more at risk, same with threadripper due to a LGA socket i believe.

I would assume that is less of an issue due to lack of a CPU replacement service for satellites in orbit . If anything the welding would improve the contact between pin and pad improving reliability.

[GoldenLag]

1 hour ago, ScratchCat said:

If anything the welding would improve the contact between pin and pad improving reliability.

Welds between pins and other connection that pass close tl eachother would be a very bad thing. There is a lot of gold the sit very close to eachother in the substrate and you dont want those interfirering with eachother. This process was at some point a method for creating cpus and other chips at one point in time

[DarkblueOO6]

personally, I would try freon and give your pc a central air cooling system that is what it sounds like you are going for anyways you know vs the radiator water cooled system they made a bit ago. remember to dump the heat outside your house like a window ac unit.

 

 

[BuckGup]

34 minutes ago, DarkblueOO6 said:

personally, I would try freon and give your pc a central air cooling system that is what it sounds like you are going for anyways you know vs the radiator water cooled system they made a bit ago. remember to dump the heat outside your house like a window ac unit.

 

 

Yeah because freon isn't horribly toxic and terrible for everything. Just use water or phase change