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by wmwmwm 1556 days ago
I was recently researching how you'd host systems like this in a datacentre and was blown away to find out that you can cool 40kW in a single air cooled rack - this might be old news for many, but it was 2x or 3x what I expected! Glad I'm not paying the electricity bill :)
3 comments

Here's what a propane heater of similar output looks like: https://www.amazon.com/Dura-Heat-Propane-Forced-Heater/dp/B0...
Most of the propane heater is a fan in a tube, the flame is probably quite smaller than a CPU package.
I've got an 8kW wood stove and that thing gets rather hot to touch - as in, you will get a blister... 40kW is a small city car worth of power.
If you think about it, cars can manage cooling 200+kW with a radiator - and a lot of airflow.

That's still an amazing amount of power though. I can't help thinking about the kind of sear you could get on a steak with 40kW of power :D

Possible, yes. Easy, no. Don't assume any ole air cooled rack (or datacenter) can manage 40k per rack. It makes it really important to do the hot isle/cold isle well, manage the airflow carefully, block any empty rack units, etc. etc. etc.
Yes, wouldn’t want to try and design it myself! I think the datacentre providers I was looking at spend quite a while doing CFD simulations to get it right!
Supermicro will sell you 40 kW CPU TDP in a single air-cooled rack, not counting the rest of the servers.