GPU-server cooling

[Alex S]

Hello, everyone!

 

Trying to find ANY reference or manual/ datasheet to determine adequate cooling amount for these beast: https://www.supermicro.com/en/products/system/GPU/8U/SYS-821GE-TNHR . Due to some restrictions cannot contact Supermicro directly.

 

Two main questions: how much air does it need to blow off heat (almost 11 kWt of power 0_0), and if we go water-cooling - what is maximum temperature for incoming coolant?

 

Any piece of advice will be priceless) Sorry for broken english, not my first language)

[leadeater]

1 hour ago, Alex S said:

what is maximum temperature for incoming coolant?

Water inlet can actually be quite high usually, the main consideration is that it'll effect GPU boost clocks since those are based on junction temperatures and the higher the water temp the higher they will be.

 

I have seen Supermicro ODM servers from various partners spec up to 47C water inlet, seen some say 53C. Never used any myself so not gotten any deeper in to it but from what I can see up to 40C should be fine. Though with that stipulation of potential performance reduction.

 

1 hour ago, Alex S said:

how much air does it need to blow off heat (almost 11 kWt of power 0_0)

Convert kw to BTU/hour and then convert BTU/hour to CFM.

 

You need roughly 1200 CFM of room airflow, this does not factor room size or anything else room related or other sources of heat.

[Alex S]

Wonderful!  Thanks!

 

2 hours ago, leadeater said:

I have seen Supermicro ODM servers from various partners spec up to 47C water inlet, seen some say 53C.

Is there any chance you could specify where i can find these numbers? and for what kind of systems are they for?

[leadeater]

1 hour ago, Alex S said:

Is there any chance you could specify where i can find these numbers? and for what kind of systems are they for?

https://produktinfo.blauer-engel.de/uploads/pdf_uploads/Datasheet - 2U Intel dual-CPU RI2208-LCS Scalable.pdf

 

https://dsiventures.com/wp-content/uploads/2016/08/NREL-Liquid-Submerged-Server-Test-Report-25-JUL-2016.pdf (Yes this is for submerged cooling but it's still fairly applicable to what you want to know).