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baseball0099

macrumors newbie
Original poster
Jan 5, 2015
2
0
I have a Macbook Air (13-inch, Mid 2011) running OS X Yosemite. I recently installed Parallels 10 and Windows 7 on my internal drive. My mac starts working harder (the fan begins to spin faster) when I open windows, even to do the smallest of tasks. Is there anyway I can reinstall windows 7 on an external hard drive and only run windows when plugged in? Would that even help to keep my mac running efficiently?
 

b0fh666

macrumors 6502a
Oct 12, 2012
954
785
south
I have a Macbook Air (13-inch, Mid 2011) running OS X Yosemite. I recently installed Parallels 10 and Windows 7 on my internal drive. My mac starts working harder (the fan begins to spin faster) when I open windows, even to do the smallest of tasks. Is there anyway I can reinstall windows 7 on an external hard drive and only run windows when plugged in? Would that even help to keep my mac running efficiently?

I do notice that running VMs prevent the CPU clock from going down like it usually does when the machine is under light load. Not sure why. Just having them running, even doing nothing on the VM, makes my macbooks run hotter.

if you install this software : https://software.intel.com/en-us/articles/intel-power-gadget-20

you can check if it is happening to your mba.

cheers
 

MarvinHC

macrumors 6502a
Jan 9, 2014
834
293
Belgium
I have a Macbook Air (13-inch, Mid 2011) running OS X Yosemite. I recently installed Parallels 10 and Windows 7 on my internal drive. My mac starts working harder (the fan begins to spin faster) when I open windows, even to do the smallest of tasks. Is there anyway I can reinstall windows 7 on an external hard drive and only run windows when plugged in? Would that even help to keep my mac running efficiently?

I can tell you that even when running Win7 on Bootcamp, the fans start to kick in quit quickly on my 2013 Air, so I think it is just down to the much less efficient OS.
 

poiihy

macrumors 68020
Aug 22, 2014
2,301
62
Is this bad for the longevity of the macbook?

Not really.
The biggest problem would be the dust builds up faster because the fans run faster. Make sure to open the machine every once in a while (annually or so) and clean out all the dust.
 

Newtons Apple

Suspended
Mar 12, 2014
22,757
15,254
Jacksonville, Florida
I have a late new loaded MBAir with i7, 256 SSD running Win 7 Pro via Bootcamp and the fan does not run all the time. Most of the time you can not hear it and the laptop barely exceeds warm. But if you are using a CPU intensive software it will cause the fan to speed up. Office, photoshop and even 2D AutoCad will not cause the fan to race.
 
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