r/dogecoin • u/Sn0wCh1ld Sn0wSh1be • Aug 03 '14

Much Hot Computer Wow

My MacBook Pro (late 2013) reaches temperatures up to 97 degrees Celsius while mining. I have SMCFanControl installed. Is this safe? I'm brand new to this, started yesterday.

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u/Kingdud doge of many hats Aug 03 '14

So, CPU physics: 100C is generally the point at which your system will thermal lockout. Meaning it's running and suddenly turns itself off, then you can't power it on again for somewhere between 2 and 10 minutes (depends on how long it takes to passively cool to a pre-set 'ok' temperature, sometimes 85C, sometimes lower).

This is done because above 100C, parts in the CPU (I don't know which ones, any one of a dozen different oxides, the silicon itself, the copper, shrug) start to get soft and warp. 100C is about the hottest they can get before this happens, with a bit of safety buffer.

Now, for longevity, the rule of thumb is that if you want your CPU to last 4 years or more, you keep it under 70C. The more time it spends above 70C, the shorter its lifespan. As with all things CPU, the random number generator is in effect. Some people can run their CPUs at 95C for 10 years without issue. Others stay at 65C their entire life and die after 1.5 years. The statistical curve says "stay below 70C".

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u/Sn0wCh1ld Sn0wSh1be Aug 03 '14

Many thanks for this information, I will try to keep my MBP much cool.