Macbook air heat and fan noise issues solved mac crazy arkla gas pay bill


First, lets start with a bit of background of why the MacBook Air get hot and why it has a fan. The MacBook Air has one fan inside it, at least in the late-2010 & mid-2011 models. gas dryer vs electric dryer calculator The fan’s job is to keep the MacBook Air’s chips from overheating by pushing hot air out the exhaust port. The exhaust port is behind the keyword, at the screen hinge.

The hottest temperature on the bottom of the case I’ve seen quoted in the press is 105F / 41C ( AnandTech) and in the wild is 109F / 43C (thanks for commenting Corbin). This benchmark was running Half Life 2 Episode 2, which works both the main processor and the graphics processor – both of which generate heat. Both processors are on the same silicon chip in the new MacBook Air.

• Playing some HD video. How much processor video playback uses depends on many factors, including video resolution (720p, 1080i, 1080p), frame rate, detail in video (bit rate), how sophisticated the encoding is (e.g. high profile), the video player used to play back the video, and how the video player is configured! Generally 720p is fine, 1080p is fine if it’s a lower bitrate Quicktime H.264 movie playing back in Quicktime, and other 1080i or 1080p (high bitrate or non-Quicktime format, e.g. MKV or AVI) will get the MacBook Air hot and fans will run.

• Playing web video. Web video uses Flash, and Flash video playback is less optimised than Quicktime. electricity generation by source I’ve noticed that occasionally a web videos use several times more CPU than another at the same resolution. I suspect that is because some web videos uses formats that Flash is optimised for (probably H.264), and others use formats that aren’t optimised in Flash (probably non-H.264 Flash video ‘FLV’). I haven’t confirmed this.

Flash is software that can be installed as a plugin to most web browsers, such as Safari, FireFox & Opera. Google’s Chrome browser includes Flash. Flash is mainly used to include animated and video ads in web pages, to deliver web video and provide games in webpages. Flash is not uncommon for charting. It’s also often used for entires sites for big product launches, like Hollywood movies.

Consider if a Flash banner ads is not visible: it’s in other browser tab, your web browser is in the background while you’re in another app (e.g. Word), or the banner is in part of the webpage that isn’t showing in the browser window. The Flash portions of webpages continue to run and consume your processor and battery even when you can’t see them.

If you watch video on websites that also have animated ads beside the video (instead of in the video), you’re getting the double penalty of Flash video plus Flash ads at the same time. i feel electricity in my body ClickToPlugin might be a good option here. You can just click on the main video to enable it, and leave the ads disabled, giving you the best chance of the MacBook Air staying cool and quiet.

I’ve seen serveral cases where people an overheating MacBook Air and noisy fans ran the free Onyx utility and that fixed performance issues. Write a comment if you’d like more specifics. In none of these cases has anyone reported the root cause of the problem, but for now I’ll include these cases here. Cause #5: System Management Confused / Needs Reset

I was experiencing a similar problem on my new MBA 13″ with i7 (loud fan with nothing running), along with some other odd issues related to battery and power. System preferences (energy saver) claimed my battery was charged at 0% (though I knew that was not the case), and I couldn’t add the battery status to the menu bar (I would click that option, the menubar with reconfigure as if to accommodate the new icon, but then it would disappear). Furthermore, when plugged in to AC, I got no lights (green or orange) on the MagSafe adapter. The support page at suggested that weird battery/power issues may be solved by an SMC reset, which I did. gas oil ratio The fans have now stopped and the other symptoms that I mentioned have also gone away. Perhaps this can help with others.

For comparison to your situation: I’m writing this reply on a completely new MacBook Air 11 inch 1.6GHz i5 with 4GB of RAM and a 128GB SSD. The only software I’ve installed is Flash. In Activity Monitor, I’ve got 2.65GB of memory free. I’ve just got Safari running, with three tabs open – one tab on Gmail, and two with WordPress (website management). Gmail and WordPress have a fair bit of JavaScript code that they download into the web browser. In Activity Monitor, my % User CPU is 0.25%, % System CPU is 0.25%, and % Idle CPU is 99.5%.

The most relevant stat in what you said is your % System CPU being at 80%. System CPU is the time your CPU is busy executing system calls in the Mac operating system. If your Mac Air is consistently staying with that high System CPU usage, that means your CPU is almost completely busy doing something, and the fan is needed to stop the CPU from getting hot.

The big question here is what is your MacAir actually doing to eat all that CPU? It sounds like when you startup, there’s some software, maybe a background process, that’s very busy. Luckily, we can find out what software process in guzzling all this CPU. electricity experiments for high school Start the Activity Monitor app, which is in the Utilities folder inside your Applications folder. It shows a list of processes. There’s a column that says “% CPU”. By clicking that column heading, ensure that column is sorted by descending CPU used (i.e. biggest % CPU number at the top). Is there a process (or processes) consuming a lot of CPU? (e.g. 80%) What’s the process name?

Thanks for really interesting and helpful postings! I wonder if I may pose a question to you too? My MacBook Pro (2.66 GHz, 8 GB RAM, 500 GB HD, OSX Lion 10.7.4) started to be very hot and noisy (fan) immediately after I installed the Microsoft Office for Mac Service Pack 2 (14.2) update specifically whenever I ran Outlook, despite no problem with Outlook prior to this. The CPU activity showed that Outlook was using approx. 90% of CPU. After 5 days I removed MS Office completely and reinstalled it without updating to SP2 and everything was fine again. Then some days later, when the fix was released for SP2 (14.2.1), I again installed it, and then the problem of excessive noise and overheating has resumed. gas 2016 Then, to my dismay, my MBP stopped working altogether – Apple Support advised me to return it to the dealer, who found that a cable to the hard-disk was burned out — they replaced it within a day and I got my MBP back intact. I tried your suggestion for a SMC reset, but the CPU hyperactivity, the overheating, and the noisy fan persist whenever I try to run Outlook (not otherwise). I would be so grateful for any help — can you advise me?

Thats freaky, i almost didn’t try it wondering how in the hell that would fix the problem. Its crazy i had another 11″ that got stolen back in last november and i replace it with the newest version in january. lately i have noticed when i sit i my chair my legs getting hot as hell, and i could hear the fan running. i was like wtf is going on here, for the life of me i could never remember hearing my old one ever make noise or hear the fan and I’ve been noticing it a lot lately, and it was VERY hot to the touch on the bottom of computer which was starting to concern me. when i read about the max fan speed, i installed the widget you recommended and mine was running at 6490 so i knew something was up, i don’t do gaming or run any thing other than email and web browsing and some spreadsheets. However you figured that out is beyond me, but just in the time i read some of the responses and have typed this my laptop has completely cooled off and in 10 minutes the fan has stayed quiet. Crazy stuff, thanks for the post and the info. That fan running at that speed was crushing my battery lately….ive been thinking i needed to take to apple shop…..thanks buddy !! CHEERS !!! – RED