"RCE" wrote in message
...

"BAR" wrote in message
. ..


Regardless of whether it has a sleep mode or not unless it is a server
class system it is not "designed" to be on 24x7. Server class means on
24x7. Desktop means on 9 to 5. Laptop means on when you are using it.


That might be what "they" say, but I don't buy it.

The killer for electronics, particularly high density power devices like
the CPU, is thermal cycling.
Components that consume power have a higher failure rate when they are
routinely cycled from operating temperature to ambient, then back to
operating temperature.

Other components, like the fan might fail, causing overheating and failure
of the electronic devices, but leaving electronics on all the time is
better for them in terms of life. An incandescent light bulb is the same
deal. One that is constantly turned on and off will fail sooner than one
that is left on all the time.

Eisboch


I remember the technical guys at work saying that about televisions.
We were instructed to turn off our computers as we left for the night for
security reasons.
I believe when we logged on the next day we would also get the benefit of
any upgrades made by the IT people overnight.