Is CPU something don't get failed easily?

Hi there
Any device (even "Humans" !!!!! ) have an Engineering value MTBF (Mean Time before failure) - and usually the harder a device is worked the shorter its MTBF is. You can probably find out the MTBF of a particular CPU model from some online Engineering database if interested.

Most components in Engineering fail (excluding misuse etc) because of mechanical wear or overheating. A typical CPU isn't mechanical and usually is properly cooled so assuming no manufacturing defects and proper power supply a typical CPU will last far longer than most people keep a laptop for - or even a desktop.

Mechanical HDD's used to be the weakest link in a computer but today's models are so much better engineered that one rarely experiences HDD failure -- even on things like NAS servers which people have going 24/7.

HDD's do fail sometimes of course which is why it's essential to take regular Computer Backups !!!!.

Cheers
jimbo

Tsw88 said:

I'd like to know, as a CPU serves and ages and deteriorates, does it work or perform tasks slower and slower?

No, the CPU itself is 'binary', it will work at full speed until it fails.

What can deteriorate with age and cause a gradual slowdown is the cooling around it. Dust can accumulate (easily cleaned out) but if the thermal paste between the CPU and its heatsink deteriorates the CPU will be throttled back to reduce the overheating.

"A lot of people say that it's hard for a CPU to get failed. I experience that too. My CPU bought 9 years ago , everything else replaced but it still serves."

That is nonsense as a PC MOBO has literally billions of semiconductor devices on the board. Most is within the individual integrated chips but there is a very large number of those integrated chips on a MOBO only 1 of which is the CPU. To be a fully functional MOBO they all have to work.

"I'd like to know, as a CPU serves and ages and deteriorates, does it work or perform tasks slower and slower? "

It stays the same as the vast majority is digital data.

"If I have a habit of turning off the PC (Now I don't), will it lengthen the lifespan of it and other hardware like ram , hdd etc "

Rather too complex a subject for a sensible answer, you would never know if there was a difference.

"I still wonder if a CPU will still fail some time and what's the primary reason "

As already mentioned it is just 1 chip on the MOBO.

The primary reason is all but impossible to say as it could be a combination of several factors which obviously the chip/CPU manufacturers know about.
Despite all their testing, burning in and selection binning there is always going to be something that will eventually be a failure at some future point, could be an increased possibility by a user overvolting, inadequate cooling, mechanical shock of being dropped, poor quality materials etc.

Bree said:

No, the CPU itself is 'binary', it will work at full speed until it fails.

What can deteriorate with age and cause a gradual slowdown is the cooling around it. Dust can accumulate (easily cleaned out) but if the thermal paste between the CPU and its heatsink deteriorates the CPU will be throttled back to reduce the overheating.

The last time I applied the thermal paste was about 5 years ago and the computer is not normally turned off during the night or when I am out. Is it high time I should re-apply thermal paste?

CountMike said:

Let CPU temperature be your guide, if it's not high it has nothing to do with that problem.

where to check the CPU temperature? I am very green in these knowledge

Hi there
I think people are going off point here

OP asked if CPU can fail / wear out -- not MOBO or other devices.

As I said before provided the CPU has been manufactured correctly and it's cooled properly and worked within correct parameters e.g power supply and clocking then it should last far longer than anything else on your computer.

Once you start running these things hotter and overclocking like crazy then all bets are off.

Cheers
jimbo