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They take extra space during installation (due to decompression), but most will not greatly increase disk usage once installed - there may be some increase, but it's not likely to be enough to worry about.
 
They take extra space during installation (due to decompression), but most will not greatly increase disk usage once installed - there may be some increase, but it's not likely to be enough to worry about.

Thats great thanks for that

Also, is there a way I can chcek the speed of my fans and the temperature of my macbook?
 
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