New Macpro and memory and ambient temperatures

Question

New Macpro and memory and ambient temperatures

I have a new MacPro bought a year or so ago. Using istat menus, one of the ambient temperature readings are consistently between 85-100F. The actual temperature outside the MacPro is 75F. So why such a high reading? The intake vents on the MacPro are clean. Similarly, my internal SSD temperature frequently spikes to up to 130F, with no change in fan speed. Using MacsFanControl, I can increase the fan speed and both the ambient and SSD temperature drops. Other SSDs in external enclosures nearby have temps in the low 80s. Should I be concerned? I have reset the SMC multiple times. Any help appreciated.

Mac Pro (Late 2013), OS X Yosemite (10.10.3)

Posted on Apr 19, 2015 6:10 AM

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Answer 1

Loner T

Level 9

59,471 points

Apr 19, 2015 6:16 AM in response to Ishan Bhattacharya1

There is sufficient thermal protection on the cylinder, and the aluminum chassis can dissipate heat. As long you can ensure adequate ventilation, you should be fine. SSDs also get hot, despite the misperception that they have no mechanical parts and should not produce heat.

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Answer 2

The hatter

Level 9

60,990 points

Apr 19, 2015 7:01 AM in response to Ishan Bhattacharya1

Where are you finding that 40*C for memory is "hot"?

Old FBDIMMs in the 2006-2008 usually showed minimum 59*C and "were in trouble" if they got to 75* even with their massive size heat sink.

The Apple SSD in the 6,1 has a heat sink though whether and how effective it is can be questioned. There are adapters to use one in a cMP with and without a heat sink and not a lot of difference but also poor contact too.

Disk drives are fine at 40*C also. I'm not sure if that is accurate or not and whether iStat is getting a good reading for it, yes PCIe-SSD can produce heat.... processors don't have moving parts, and they get hot, but there you are talking 35*C idle and 65-75*C under load.

Laptops are unfortunate in seeing extreme temperatures, closed space, and fan has to work harder.

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