If a PC is not going to be used for (8) hours or more, is it better (for parts/HDD longevity) to just leave it running or Shut if Off ??
Asus Rampage, Q9450 @ 3.2GHz, 4GB DDR2 800MHz (4-4-4-12), 8800GTS 512MB
X-Fi XtremeGamer, 4 1TB HDs, Triple Boot - Ubuntu (Hardy), XP Pro and Vista Ultimate 64bit
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Another vote for turning it off. The classic argument is that powering on is more stressful than keeping it running. If you power cycle it every 5 minutes, well, yeah. Every 12-24 hours - come on.
Here's a classic article on the subject from 1993 (!). Even way back then hard drives were rated for about 20,000 power cycles and 25,000 hours of continuous operation - powering off every day was just fine. Today hard drives are easily 2-3 times more reliable than that.
Of course that's hard to believe when you're unlucky enough to have one die on you after 6 months. I've been extremely lucky and had 2 PC's with drives that lasted 5 and 7 years with daily power-downs.
Startup stresses are negligible. Power supplies do not 'lurch' on, they startup under a programmed ramp, the designers recognizing that at cold start, capacitors briefly appear to be a dead short. They turn off the same way. So it's not like slamming the doors on your car.
Certain old drives actually landed the heads on the disc surface at shutdown. They also were prone to bearing changes with temperature from long runtimes. Those two reliablility factors cancelled each other out. Starting/stopping it was bad, leaving it running was bad. Those issues have largely been overcome in recent designs.
When you hear/read about people having trouble turning their computer on after it's been off, that is a circumstance specific to that unit, and the root cause is the current generation of marginally-defective capacitors being used in all computers. When that starts happening, you might get another month's use out of it by leaving it on. But as the capacitors continue to deteriorate, the system will still fail outright.
Technically, this should not be happening. Capacitors in computers are under much less stress than they are in say, a CRT television. But vendors have cost-reduced the parts to the extent their reliability is heavily compromised.
I leave mine on 24/7. When you turn a cold computer on there is a "electronic shock" to the system.
after a while this "shock" can blow a component on startup. if you leave it on then everything is at optimal
just my opinion
drprinter wrote:I leave mine on 24/7. When you turn a cold computer on there is a "electronic shock" to the system.after a while this "shock" can blow a component on startup.
after a while this "shock" can blow a component on startup.
Not true any more.
The only thing that would cause a "shock" as you put it on startup is if there is an electrical inductance present. The inductance that is on all integrated circuits inside your typical computer today is completely negligible and is of no concern whatsoever.
The only component that is susceptible to this would be the power supply, however in recent years the parasitic inductances and capcitances has be ironed out. So this shock is no longer present.
The 'turnon shock' has been relegated to an urban legend. Computers regulate their turnons. Not so much to give you more reliability--though it does--but to let them use cheaper parts--which they do.
Mine's 10 years old, and I power-cycle it 1-3 times a day, and think nothing of it. BTW, my job at Dell was reliability engineer, before they decided to slough that off onto vendors.
x_lab rat wrote:The 'turnon shock' has been relegated to an urban legend. Computers regulate their turnons. Not so much to give you more reliability--though it does--but to let them use cheaper parts--which they do.
x_lab rat wrote:Mine's 10 years old, and I power-cycle it 1-3 times a day, and think nothing of it. BTW, my job at Dell was reliability engineer, before they decided to slough that off onto vendors.
I'm sorry, but I have to ask to satisfy my interest. What are the specs of your 10 year old system?
If my answer was helpful, please use the 'Did this answer the question' and click: YesForum Member since 2001I am not employed by Dell
Dell XPS R-400, Maxtor 8G. Survived Texas thunderstorms and the onslaught of viruses in the early 00s, with the factory image still intact and working like new. It's obsolete, but it does what I need done and it is trouble free.
I am a very satisfied Dell customer, though I'm not certain I would be if I bought one today.
Landing-zone drives had a reliability deficit, but virtually all drives today are ramp-load. Starting and stopping them extracts no penalty. What mainly impacts drive reliability today, is the fact that manufacturing assemblers are rushed and handle them roughly. A raw drive is about as fragile as an egg. Plopping it onto a hard worksurface can doom it to internal destruction within months.
I also have a Dell XPS R-400 that I ordered with Win98 (orig) and had to wait after they had built it because they could not ship Win98 yet. Still use it once every few days and it still has the factory image as well.
With Vista I just about always use sleep instead of shutting it down.