Finally, on what was the fifth return trip to the store for the same problem, one of the geniuses took the TG Pro printouts from me and said they would look at them seriously. I emailed the developer of TG Pro, and he told me that if TG Pro showed a sensor, then it was there. And all service manuals and parts descriptions that I found showed only one sensor. Their Apple diagnostic software showed only one sensor. But TG Pro showed two LCD Proximity Temperature Sensors, and the Geniuses swore that there was only one. Midway through the process, I presented the genuises with what I considered very conclusive evidence from TG Pro that there was an LCD Proximity Temperature Sensor that was either missing or showing a crazy negative reading when the fans were racing.

The technicians tried various fixes, or told me it was due to “non-Apple” memory, or because I was mixing memory sizes (Two 4gb and Two 2gb DIMMs). I took my iMac 27” i7 (Mid-2011) into the Apple Store because the fans were racing intermittently. Congrats to you for a nice bit of software.Īn Invaluable App - Taught the Apple Store Geniuses a lesson. I think a price point for the base software should be $3.99, but considering the rules in App Store a dollar more to be able to use on any family machine is not too expensive. One item they could add is a comparison tool for stock machines and voluntary statistics from other users about the running temperture performance.

FYI, my machine (15” Retina MBP) runs at 125☏ with the fans running silently 2000RPM with the cover closed. Pro adds higher than normal fan control if you choose. TG and its big brother TG Pro use little resources on their own and give you the information needed in great detail or less if you set the preferences that way.

Since Apple chose not to do so, thansk to TunaBelly we have that capability. The user should know about it in similar detail. Why not heat? The sensors collect the data and the CPU reacts to that data, perhaps when it’s too late. After all Apple provides Power and Battery monitoring, CPU monitoring, network monitoring available to the user. It gives you peace of mind to know that your Mac is staying cool and if not, which apps, connections are pulling a lot of CPU, or other resource heat (e.g., demand). While not an absolute necessity, this app is one I classify, “Nice to have.” Like most of the commenters, I similarly appreciate this nifty little utility. Good & Useful a bit pricey (esp since there is a “Pro” app upgrade)

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