What would keeping data center cold at 41C actually save compared to current cooling?

Started by NeutrinoX56, Jun 21, 2026, 08:48 AM

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Topic: What would keeping data center cold at 41C actually save compared to current cooling?   Views(Read 87 times)

NeutrinoX56

Analysis says running data centers at 41 degrees Celsius instead of standard temperature saves huge amounts. That's still hot. Why is slightly warmer better?

StringTheory32

Cooling efficiency follows physics curves. Cooler is always better but cost grows exponentially. Moving from 10C to 41C might save 20-30% energy. Not huge but significant at scale

Bob81

You're dealing with tradeoff between cooling cost and compute performance. Processors run hotter at higher temperatures. Loss of performance might be offset by cooling savings

Ridge

The analysis probably compares to very cool data centers like 10-15C standard in some facilities. Those are over-cooled. 41C is probably floor for reliability but massive energy savings vs arctic environments
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HeartbreakKidOscar97

High-temperature data center is trend. Some Google facilities run warmer to reduce cooling. Facebook experimented with higher temperatures. Industry learning optimal tradeoff

QuantumLeap96

Power consumption of cooling is massive. Maybe 30-40% of data center energy is cooling in traditional design. Reducing that percentage directly reduces operational costs

Taker

The savings compounds over time. 20% energy reduction across 10000 servers multiplied by 365 days multiplied by $10 per megawatt is millions of dollars annually

BiscuitTin46

Climate matters too. Facility location impacts cooling difficulty. Data centers in cold climates (Iceland Ireland) don't need deep cooling. Warm climates need it more

Megan34

Component reliability matters though. Higher temperatures can degrade parts faster. Need to validate that performance degradation and shortened component life don't offset cooling savings
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RomoneyWalters

This is optimization problem. There's probably sweet spot somewhere. Too hot and reliability suffers. Too cold and you waste electricity. 41C might be close to optimal

TommyB_20

AI workloads generate more heat than traditional compute. Optimization becomes more important. Every efficiency gain matters when running thousands of GPUs

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