hdds range from 55 c to 65 c
HDD's shouldn't be running that hot either (stand alone is usually under 45C for a 7200rpm disk or slower). Faster rpm SAS disks run hotter, but don't get to 65C (Hitachi's
Ultrastar 15k600 has an operating temp limit of 5C to 55C, and a non-operating temp range of -40C to 70C).
Another note, thermal alarms in rackmount or tower HDD enclosures usually have a physical switch on the back to set them at either 45C or 55C (most disks usually run under 45C). I think of the difference as slower spindles (up to 7200rpm) to faster spindles (10k or 15k, which is usually SAS disks; though there is the Velociraptor SATA @ 10k, but it runs cool for that speed).
No product should go over 55C where a human can touch it. It's a safety issue, and the manufacturer could be held liable for medical expenses, punitive damages, and legal fees of a person injured by their products. This definitely gets the attention of management, and is something they'll heed (money = language they understand clearly, no matter what nation they're from
).
As a general rule, CPU's and GPU's run hotter than 55C, but they also have cooling systems of some sort attached to them (rather big hint
). And the temps on the fins you can touch (i.e. CPU or GPU cooler) run at 55C or less. Anything hotter, and it will be enclosed (such as a GPU cooler shrouded in plastic - granted, one of it's major functions is to direct airflow, but it's also for safety as well on the fastest GPUs that run like their sole purpose is to create a volcano).
here is a pdf for a 1050watt thermaltake psu
ENVIRONMENT:
- Operating Temperature 10 ℃ to 50 ℃
- Storage Temperature -40 ℃ to 70℃
- Operating Humidity 20% to 90%, non-condensing
- Storage Humidity 5% to 95%, non-condensing
PSU's usually aren't meant to run as high as 55C, but the won't go over that due to safety reasons mentioned previously.
From a technical POV, the cooler they operate at, the longer they will last, given PSU's rely heavily on capacitors, particularly electrolytics for the largest value parts = reduced life as the working temp goes up (this is seen with other types as well, including polymer capacitors, but electrolytics are affected faster than polymer types = why the industry is switching over to polys where ever possible in top tier products).
Another thing to note, is that figure of 50C should be under full load, which is a continuous 1050W for this particular PSU.
so the psu is hot for that mac pro 122 and 117
It is.
PSU's run cooler if the load is less than it's continuous rating, which is usually the case inside a MP. So unless I missed something, this is WAY to hot for the load (screen shot shows: Power Supply 1 = 165.5W; nothing shown for PSU #2, which does have a thermal reading, but I don't expect both to add to 980W).
