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My MacBook used to get really hot when playing WoW. I found 2 major things that keep it cool.

1.) Download SMC Fan Control and set the Fans to the Higher Setting (about 4000rpm).

2.) Get something like an mStand to keep it elevated and support airflow.

Really these two things take the MacBook from being too hot to touch to running pretty cool even after hours!
 
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My MacBook used to get really hot when playing WoW. I found 2 major things that keep it cool.

1.) Download SMC Fan Control and set the Fans to the Higher Setting (about 4000rpm).

2.) Get something like an mStand to keep it elevated and support airflow.

Really these two things take the MacBook from being too hot to touch to running pretty cool even after hours!

I'd do the SMC but from what I hear it still doesn't help a lot with older specs. Also you risk wearing out the fan(s) fast. Does anyone know if it is common for MB fans to go out?
 
Did you ever do this? I wouldn't mind trying it out if you had success. I have a Macbook Pro mid 2009 and it gets 80c to 90c's when I run Netflix for a while. This isn't a great concern but if I watch a few movies/shows a few times it will add up to several hours a week of hard use. Which may just push my old MBP over the edge.

Oh dear. Please do not try this. If anything, cutting holes in the bottom of your laptop will only disrupt the internal airflow. Even if you're totally successful and you drop the temperature by a few degrees, it's not going to make a bit of difference in the long run. Your computer is designed to operate at high temperatures.

What you should do is clean out the heat sinks and fans with some canned air. Follow the directions on iFixit.com for replacing a fan, but instead of removing it, blow out all the dust and grime that have accumulated in the fan and the heat sink over the last 4 years.

TLDR: Make sure the internal cooling systems are working the way they should. Don't bother with snakeoil.
 
Did you ever do this? I wouldn't mind trying it out if you had success. I have a Macbook Pro mid 2009 and it gets 80c to 90c's when I run Netflix for a while. This isn't a great concern but if I watch a few movies/shows a few times it will add up to several hours a week of hard use. Which may just push my old MBP over the edge.

I've tried using a fan blowing over the top of it, but it drops it maybe 1c. The most effective thing I've done is put some frozen thing under it but that only has gotten it down to 86*c at the lowest. Sure it makes the bottom of the case cold but not the internals. I've also noticed some condensation when I do this, which is what stops me from putting anything frozen near the top where it could suck in the moisture (or even droplets of water.)

I'm trying to make it last another year until college is over (unless the next macbook update is great enough to justify selling mine and buying a new one.) If not I will try and make a good make shift mount for it use a fan and something cold, and run it through a TV if I want to watch something long.

(Ik this is an issue with MB's and wish there was a good praticle fix, I see a lot of MB's running hot for long periods of times every day. Because you know the girls have to watch every season of Gossip Girls in one day long marathon.)

Sorry for never answering :D I forgot :p

I more or less ended up doing it actually. I bought a bottom case for 25€, had a couple scratches but who cares. Then I bought a set of 1mm steel drill bits (2 in the pack for 4€)
I measured out where exactly the fans are opposite of, marked it with a white coloured pencil, drew a grid into the circle. Lines 1mm apart, giving me 1mm squared boxes.
Then I started drilling. Slowly and steadily was the key as i didnt want to overheat the aluminium. It worked well. 1hr and 25 holes later, yes it took that long, the drill bit snapped. Little bit too much pressure and bam.
So I took the second bit, got just over half way for the left fan holes when it snapped too, i was being so careful but still.
As I couldn't be bothered to drive and get new bits, I took out the right fan and put on the new bottom case. i had run tests with 1 fan, having two CPU cores run at 100% each, and compared that too the temps with new case.
First thing I noticed was that the sound from the fan was different. It seemed louder as it was a different frequency :( Secondly, temps where no different. But keep in mind, i had only drilled holes for half of the left fan. So maybe when its got more it would make a difference.

I decided to not try the wire mesh thing because the black plastic in the bottom case is to stop shorts on the logic board when it gets pressed against it from pressure when moving it or whatever. Wire mesh would make it short out like crazy, dont need a dead logic board :D

Maybe the best thing to do would be to just cut a big hole in the bottom and then have a laptop cooler to constantly blow cold air onto the logic board. Ok you could only use this when at your desk and exchange it all the time for the original bottom case as you cant have your logic board exposed. Maybe a sliding doors mechanism would work :D. But im not that desperate, haha

Since then the bottom case has been lying in my shelf. Ill carry on with it at one point I guess.

I upgraded my 2010, which is for sale, to a 2012 last week and its quieter, and the fans seem to have a different frequency now, not as annoying.
 
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I found a plastic (or something similar) snap on case for my MBP13 late 2011 that has little 1.5 inch pop-out feet on the back corners of the bottom cover, AND also slat and round cutouts for air circulation. Top is a solid snap on piece. Works great!

I don't remember the brand and there's no logo on the case, but I imagine there's more than one like it. If your interested, PM me and I'll send you a photo. I got a translucent red one and a translucent blue one. Fits snugly, stays on and DOES keep the MBP cool. And, of course, you can see the Apple logo through it.

PS - Check your apps that use push. I've had a few that work so much in the background they have forced the fan to kick in. Bye Bye app... or at least no push.
 
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