@nixCraft to add some context for people on what 120kW means…
An average US home uses 10,500kWh per year, or an average of 29kWh per day. This averages out at 1.2kW.
In other words, if that server rack runs its PSU at 100%, it’s using as much power as 100 homes. In about 6sqft of floor space. Not including power used to cool it.