Liquid Cooling High-End Servers Direct to Chip, Rear Door, and Immersion Cooling

We get into cooling next-gen servers. Specifically, with the help of Supermicro, we are able to show off direct to chip liquid cooling, rear door heat exchanger, and liquid immersion cooling solutions.

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Timestamps
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00:00 Introduction
04:40 Rear Door Heat Exchanger
07:18 Liquid Immersion Cooling
13:15 Direct to Chip Liquid-Water Cooling
15:47 Liquid Cooling Performance and Power Consumption
22:53 Quick STH Update
21:45 Implications for 2022 Servers and Beyond

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Other STH Content Mentioned in this Video
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[tommihommi]

All that knowledge collected by people doing custom loop overclocking is finally paying off :D

[lels]

we NEED to start using all of this heat! the city of Lucerne in Switzerland is building a data center that will heat part of the city inside of a retired bunker - i think thats pretty epic :>

[excitedbox]

Liquid cooling makes so much sense and I think in the future we will see much more direct to outside liquid cooling. It makes no sense putting several space heaters in a room and then using your AC to cool the room. It is much more efficient to have an outdoor radiator and dump the heat directly outside.

[PalCan]

Your excitement is contagious man. Thanks for bringing to our fingerprints the bleeding edge in tech.

[gamershadow]

I’ve always been super interested in server watercooling. Thank you for making this!

[FakeName]

This video is severely underrated. Well put together and informative without being boring. Would of loved to see the inside of the server because.. well its cool. Now if only i can setup a central PC in a closet, and run cables to my monitor/keyboard etc at my desk, and then kick out any heat to the outside that would be great.

[SICSIC]

I work with a start-up company together with Dell and Shell to deploy immersion cooling systems. Its really cool but it definitely has its disadvantages. You cant use any thermal paste for example, we use indium foil as an interface for the heatsinks.

Letting a server drain for 30 min is enough to service it. The components do not need to be cleaned. You can just remove and install a CPU in a socket, both covered in oil, without any problem.

[CheapSushi]

So glad STH exists to show off this stuff to us regular enthusiasts. This is damn awesome. IBM's Z System liquid cooled 5GHz CPU's were what got me interested a long time ago on maxing performance. I wanted to be as cool as those mainframes. Imagine if STH could do a tour of IBM's Z systems!

BTW were those Noctua fans on the rear? haha saw that they were brown(ish?)

[TheLaurentDupuis]

Immersion cooling was used by the old Crays supercomputer of the 80s.

[thejo]

nice! I love seeing this type of next-gen stuff. Keeping CPU/GPU die liquid-cooled to a lower temp also helps to improve efficiency by reducing leakage current within the silicon.

[joanf]

It feels amazing to open the video and just enjoy some super cool water cooling, always been a custom loop guy and now this knowledge can be applied to servers. Just love it! Keep up with the amazing job you’re doing! 👍

[jfbeam]

The rack-door systems I've seen were basically moving the evap coils of the HVAC into the rack door. Removing the air middleman, running the liquid lines direct to the chips would be a great deal more efficient, if a lot more messy.

The one you show is rather useless as all the heat still has to be dumped into air, pulled back out of the air into a refrigerant (which might be CW), to be pumped out of the room/building. If you've put the waste heat into a liquid (or gas), skip the extra steps and pump _that_ out of the space.

[hvac]

We work on a lot of liquid cool data centers super cool technology and it’s just growing so much faster and faster! Love the content.

[PqzxnxfPxZHwDRV]

Components that were immersed in 3M Novec come out completely clean. In fact the fluid is specifically used for cleaning also.

[xSeiryu]

Liquid cooling rack servers what a time to be alive I love it!

[DrivingWithJake]

This is where we see the dipping systems more often. 2U 4 node systems also makes it easy to work on as the nodes can pull out of the back without having to remove the whole system form a tank.

[jeremybarber]

Ah liquid cooling… Thanks for the video, very fun to see where the high end is headed in the server space.

[SmokeytheBeer]

Puts a whole new meaning on "hot hardware"

[Christopher_S]

Supermicro are awesome to have helped you do this. Super interesting, great job.

[scheimong]

1kW+ practically means having one of those commercial microwave ovens that you see in convenience stores, in each U of your rack. Difference is instead of food what you're frying is thousands of dollars worth of electronics... It honestly surprises me how air cooling was able to take us this far.