Run your iMac like you usually do and use iStats Nano to check its internal temps. If internal HDD is above "normal heat range", then its running hot. For example, 40-50C is normal heat range for HDDs. Into 55C is getting too warm. Above 60C is extreme hot. If internal GPU is above normal heat range, then its running hot as well. If your system is running above normal range, one can decide to "drive it as is". Or, one can can apply 3rd party improvements to keep its insides cooler. For me, I apply 3rd party fan control software to keep my iMac's insides cooler. Some folks decide to run an item until its does an automatic shut-off. Same way they drive their vehicle while towing / loaded down state as well. re: Drive until the dummy (often called "too late") light comes on.
There's some folks who drive their items (iMacs, autos, motorcycles) hard and never check their item's internal temp reading. Since the light doesn't come on or it doesn't auto shut-down, then in their minds, it isn't running hot. One should really compare their all-in-one iMac box design with open box temp readings. Bet one will be surprised that their iMac does run hotter - compared to open box design.
For me, I'm glad I run 3rd party fan control software. Especially since the software is FREE. Fee add-on to make its inside's 5-8C cooler??? Sounds worth it to me . Especially in the long run .
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There's some folks who drive their items (iMacs, autos, motorcycles) hard and never check their item's internal temp reading. Since the light doesn't come on or it doesn't auto shut-down, then in their minds, it isn't running hot. One should really compare their all-in-one iMac box design with open box temp readings. Bet one will be surprised that their iMac does run hotter - compared to open box design.
For me, I'm glad I run 3rd party fan control software. Especially since the software is FREE. Fee add-on to make its inside's 5-8C cooler??? Sounds worth it to me . Especially in the long run .
.