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2018 i9 MacBook Pro throttling discussion [merged]
- Thread starter M.Rizk
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I think you have to downgrade to High Sierra
It looks like they did exactly as the guy here with the undervolting method.
It´s that stability as he had.
Will be wonderful to se comparisons between the 2.2 2.6 and 2.9 now
It´s that stability as he had.
Will be wonderful to se comparisons between the 2.2 2.6 and 2.9 now
They will probably release something within the week as supplemental special to the 2018 books, or alongside the regular beta update next week or whenever. Just wait it out.
Looking forward to the benchmarks. Between the throttling and my coworker convincing me I should have gone for 32GB of ram, I returned mine. If everything is working as it should I'll probably bite again, but with 32GB.
Yeah I hope someone does a comparison soon. I have till Saturday to decide whether to keep my i9.
I was hoping that update would be a separate T2 update independent from macOS.They will probably release something within the week as supplemental special to the 2018 books, or alongside the regular beta update next week or whenever. Just wait it out.
Dang it, I went with the 2.2 after reading all this, now I wonder if it's worth returning for the 2.6. Looking forward to more testing...
Probably has more to do with P and C states.
https://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface
I returned my 2.6 this morning with the plan of getting the 2.2 and bumping up to 32GB of ram. As soon as I got home I saw the announcement about Apple's fix lol. Just waiting now to see how it shakes out before I rebuy. ~_~
Several Cinebench runs on my i9 / 32 gb MBP
Single run on cool CPU: 1071cb
Two runs in a row, second run gives: 1002 cb (noticed that fans were not noticeable at all until half way through the second run).
Also tried with Mac Fans Control spinning fans at full speed before running Cinebench:
Single run on cool CPU: 1099 cb (CPU was constantly at 3.3GHz)
Two runs in a row, second run gives: 1018 cb (CPU dropped to 3.1GHz)
No throttling.
Before this Apple update I was getting ~940 cb on single run and even lower on multiple.
Screenshots attached.
Single run on cool CPU: 1071cb
Two runs in a row, second run gives: 1002 cb (noticed that fans were not noticeable at all until half way through the second run).
Also tried with Mac Fans Control spinning fans at full speed before running Cinebench:
Single run on cool CPU: 1099 cb (CPU was constantly at 3.3GHz)
Two runs in a row, second run gives: 1018 cb (CPU dropped to 3.1GHz)
No throttling.
Before this Apple update I was getting ~940 cb on single run and even lower on multiple.
Screenshots attached.
Attachments
I do both. Backup to the NAS and backup to offline drives. NAS is very convenient but off line backups are far quicker for a full restore, and somewhat more secure.
Apple implemented randompersonx's fix. A better implementation (because they can and sign it correctly) but slightly more conservative. Finally.
https://www.reddit.com/r/macbookpro/comments/91256u/optimal_cpu_tuning_settings_for_i9_mbp_to_stop/
Apple Engineering should hire him.
That's the end of that then. Good on Apple for fixing this as quickly as they did.
A close race between the models now , all of them reaching over 1000cb.
But on shorter projects, it Will still be 2,9>2,6>2,2.
I'm guessing its going to turn out that single core tasks will show more difference between the models.
Good on reddit and /u/randompersonx for discovering the fix and Apple using his/her knowledge and extending it and making it perfect. If it were just Apple discovering the fix, I don't think we would've gotten it this quick IMHO.