5 ms·

I feel the same applies to Macbook as well. I've a Macbook Pro Retina 13 inch, early 2015 at a battery cycle count of 1001. From the last few weeks, the system

I feel the same applies to Macbook as well. I've a Macbook Pro Retina 13 inch, early 2015 at a battery cycle count of 1001. From the last few weeks, the system is terribly slow. I randomly see the fan speed going berserk. :/

saagarjha 9y ago
Might be something wrong with your SMC or thermal throttling going on. Either way I'd suggest resetting the SMC and if that doesn't fix it check out Activity Monitor to see what's wrong.
- xmpirate 9y ago
  Nothing really. I did reset the SMC couple of times and also check the Activity Monitor every time the fan speed increases, but to no avail.
  - xmpirate 9y ago
    Looks like I need to replace the battery as it's near it's end of life - https://support.apple.com/en-in/HT201585 https://support.apple.com/en-in/HT201585
  - Domenic_S 9y ago
    Could be dirty. Google a cleaning guide for your model, the fans get all sorts of dusty and it causes thermal issues.
  - gnyman 9y ago
    Did you try running the hardware test? https://support.apple.com/en-us/HT201257 https://support.apple.com/en-us/HT201257 I had a old Air which ran very slowly and fans spinning like crazy due to a issue with the cable from the keyboard/touchpad. Apparently if the SMC does not get proper signals it will go into a "failsafe" where things work but slowly. Probably not the same issue, but just a little anecdote on a similar symptoms caused by different issues so that nobody gets tunnel vision on the battery, which might very well be the cause in this case.
azurelogic 9y ago
Dust-clogged fans and degraded thermal paste can also be a factor, particularly after 3 years. iFixit guide for removing your heatsink: https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Retina+Display+Early+2015+Heat+Sink+Replacement/45130 https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Retina+Disp... My favorite thermal paste: https://noctua.at/en/nt-h1.html https://noctua.at/en/nt-h1.html
hyperduc 9y ago
Around the time this was coming up in the big reddit thread, I also saw cases of Macs with either a 'service battery' or removed battery also suffer slower speeds. You should replace the battery to return full performance.

saagarjha 9y ago

Might be something wrong with your SMC or thermal throttling going on. Either way I'd suggest resetting the SMC and if that doesn't fix it check out Activity Monitor to see what's wrong.

xmpirate 9y ago
Nothing really. I did reset the SMC couple of times and also check the Activity Monitor every time the fan speed increases, but to no avail.
- xmpirate 9y ago
  Looks like I need to replace the battery as it's near it's end of life - https://support.apple.com/en-in/HT201585 https://support.apple.com/en-in/HT201585
- Domenic_S 9y ago
  Could be dirty. Google a cleaning guide for your model, the fans get all sorts of dusty and it causes thermal issues.
- gnyman 9y ago
  Did you try running the hardware test? https://support.apple.com/en-us/HT201257 https://support.apple.com/en-us/HT201257 I had a old Air which ran very slowly and fans spinning like crazy due to a issue with the cable from the keyboard/touchpad. Apparently if the SMC does not get proper signals it will go into a "failsafe" where things work but slowly. Probably not the same issue, but just a little anecdote on a similar symptoms caused by different issues so that nobody gets tunnel vision on the battery, which might very well be the cause in this case.

azurelogic 9y ago

Dust-clogged fans and degraded thermal paste can also be a factor, particularly after 3 years. iFixit guide for removing your heatsink: https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Retina+Display+Early+2015+Heat+Sink+Replacement/45130 https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Retina+Disp... My favorite thermal paste: https://noctua.at/en/nt-h1.html https://noctua.at/en/nt-h1.html

hyperduc 9y ago

Around the time this was coming up in the big reddit thread, I also saw cases of Macs with either a 'service battery' or removed battery also suffer slower speeds. You should replace the battery to return full performance.