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I’m running BOINC Manager on my iMac, allowing it to use the full processor. I’m just running SETI@Home, though considering other projects.

I’ve downloaded iStat Menus to monitor it, and I’m noticing my CPU cores are each running around 200°F (93°C). I gather that’s not unusual if a CPU is under heavy load, but my question is whether this is sustainable.

If I leave BOINC running all the time, will it significantly decrease my CPU’s lifespan? If so, what can I do that would make this a safer process?

For example, is there a temperature at which CPUs won’t get damaged? (I could regulate how much CPU time BOINC can use, for example.)

  • Which project(s) are you running on BOINC? They should have computing preferences where you can limit the CPU usage. I run Rosetta@home and set it to 50% and temps are okay – MC10 Jun 20 at 13:48
  • Ah, thanks. I’m running SETi@Home. I’ll add that via an edit. – Skeptic Jun 20 at 13:49
  • Okay yeah I ran that too, it should have the same exact settings. Computing preferences under Your Account page – MC10 Jun 20 at 13:51
  • I know comments aren't for discussion, but which team do you compute for? Got a link to your boincstats page? – spikey_richie Jun 20 at 14:04
  • It all depends on your system, environment and resources. If you are concerned just tweak to lower usage. – JakeGould Jun 20 at 14:21
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You can manage the usage of all resources used by BOINC. The example here is SETI@Home but I think it's identical or similar for others. I run Rosetta@Home and it looks the same.

Under the Your account page, go to PreferencesComputing preferences.

Your account

Scroll to the bottom and click the green Edit preferences button. Now you should be able to edit all of the values.

Change the CPU time to 50% or whatever suits your system. I use 40% and get reasonable temps. If you hover over the box, it gives you an explanation of the usage.

Computing preferences

In BOINC Manager you'll have to update the project. It should then reflect these changes.

  • Thanks. I guess my question is more to do with how you determined what suited your system, what reasonable temperatures meant for you. Possibly running four cores at 200°F isn’t a problem, but I just don’t know. And I don’t know if 50° is any better, for that matter. Do you have any recommendations for where to find out about this? – Skeptic Jun 20 at 14:20
  • Ah, that's very subjective then. There have been many questions about that, often closed as off-topic superuser.com/questions/749146/safe-long-term-cpu-temp – MC10 Jun 20 at 14:46

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