# Server One running 95°C at 7% CPU

**URL:** https://community.start9.com/t/server-one-running-95-c-at-7-cpu/5767
**Category:** StartOS Support
**Tags:** hardware
**Created:** [September 25, 2026, 2:30am UTC](https://community.start9.com/t/server-one-running-95-c-at-7-cpu/5767 "2026-09-25T02:30:22Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![ddigital](https://community.start9.com/letter_avatar_proxy/v4/letter/d/db5fbb/32.png) [@ddigital](https://community.start9.com/u/ddigital)
#### Post date: [September 25, 2026, 2:30am UTC](https://community.start9.com/t/server-one-running-95-c-at-7-cpu/5767/1 "2026-09-25T02:30:22Z")

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Need advice please. Running Start9 OS 0.4.0.1. I just updated electrs to 0.12.0:2. App has been syncing for an hour now with temps constant between 90-100 degrees Celsius and fan pulsing on and off every 5-10 seconds.

Are these temps to be expected with a CPU load of 7%?

 ![Screenshot 2026-09-25 122900](https://community.start9.com/uploads/default/original/2X/3/353739205fe8b1f6765d39b42d61ad1d0d48a234.png)

Vents are clean, no dust, no flow restriction and ambient temp is 24 degrees Celsius.

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### Author: ![sovern](https://community.start9.com/user_avatar/community.start9.com/sovern/32/2366_2.png) [@sovern](https://community.start9.com/u/sovern)
#### Post date: [September 25, 2026, 11:37am UTC](https://community.start9.com/t/server-one-running-95-c-at-7-cpu/5767/2 "2026-09-25T11:37:37Z")

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kill any services you don’t need and make sure that the node is got decent airflow

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### Author: ![StuPleb](https://community.start9.com/user_avatar/community.start9.com/stupleb/32/195_2.png) [@StuPleb](https://community.start9.com/u/StuPleb)
#### Post date: [September 25, 2026, 1:31pm UTC](https://community.start9.com/t/server-one-running-95-c-at-7-cpu/5767/3 "2026-09-25T13:31:00Z")

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Good advice above to not run things you don’t use.

Also worth stating the obvious that if your server is under heavy use it’ll be hot.

Finally, Mempool is now terribly bloated and inefficient, and heading towards being impossible to run for home users on simple hardware. Some people keep it turned off for convenience, and start it only when they expect to use it.

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### Author: ![ddigital](https://community.start9.com/letter_avatar_proxy/v4/letter/d/db5fbb/32.png) [@ddigital](https://community.start9.com/u/ddigital)
#### Post date: [September 25, 2026, 9:58pm UTC](https://community.start9.com/t/server-one-running-95-c-at-7-cpu/5767/4 "2026-09-25T21:58:30Z")

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Thanks both for the responses. Sync has finished finally and everything looks to be back in normal ranges again. Will keep services off that are not in use.

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### Author: ![system](https://community.start9.com/uploads/default/original/1X/2dcde8aa6ad3ce3d7873096ee4b3e5395e19a7b5.png) [@system](https://community.start9.com/u/system)
#### Post date: [September 27, 2026, 9:58pm UTC](https://community.start9.com/t/server-one-running-95-c-at-7-cpu/5767/5 "2026-09-27T21:58:36Z")

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