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How Loud Are Your Mac's Fans?

When they get hot, Macs turn on various internal fans to keep components cool. The noise can be annoying, but just how loud is it? If you have an iOS device with a built-in microphone, you can download one of many free sound meter apps (search on decibel in the App Store) and see if you're subjecting your ears to a truly unreasonable noise level.

 
 

IIvx & A/UX

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In an effort to clarify Mark's article on the incompatibility between the IIvx and Apple's Unix operating system, A/UX 3.0 (TidBITS-157), Pythaeus writes:

The Mac IIvx does not run A/UX 3.0 for the same reason that System 6 does not run on the Quadra 700: the CPU was released long after the system software shipped, so the operating system (OS) can't possibly know about the addresses and capabilities of the new hardware. A/UX 3.0 does such a good job of making Unix look like a Macintosh that people forget the operating system is Unix, not MacOS. A/UX does not sit on top of System 7 (a la Tenon), but the other way around. It makes no sense to talk about A/UX being "System 7.1 compatible" once you understand this fact. Unless the hardware designers bend over backwards to maintain compatibility, you will always need a new OS (or new OS components) to support new hardware. The Mac IIvx was released after A/UX 3.0, and contains new ASICs (like its sound chip), so A/UX 3.0 has no clue what to do.

 

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