A few days ago I decided to give my MacBook Pro's
internal fans and heatsinks a clean, but before I did that I decided to collect some data on temperatures before the clean out. I knew my Mac
has been running hotter than usual lately, I just didn't know how bad it was. I've not cleaned its heatsinks or fans ever since I purchased it back in 2012 (4 years now).
I used Hardware Monitor
to collect temperature results and Geekbench 4
to perform benchmarks so that my Mac
would heat up. All tests were run with ambient temperature of 23C
These were the numbers before doing a clean out. That's pretty hot and you could really feel the Mac
heat up for a while there.
After doing the clean, I collected more results to compare to the before data. I ran the Geekbench CPU Benchmark
two times prior to doing a final run to collect data so that it didn't appear cooler just because it was switched off for some time. Overall both the minimum and maximum temperatures (except CPU core 1
) were lower. The after results show that the Mac
cools down to idle temperatures much faster. There appeared to be less heat buildup during benchmarks too, this could be seen by cooler GPU
and 3rd and 4th CPU core
temperatures. What that was saying was that heat was being dissipated much quicker that before. Less heat buildup should prolong component life times so this is a good thing, it felt cooler to the touch.
I was expecting a more significant drop in temperatures but was still impressed with the difference it did make. I could notice this especially during work hours when running Virtual Machines, the fans weren't spinning up as much any more. Less fan noise and less heat, awesome!
This write up wouldn't be complete without photos so lets see how I cleaned it.
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