How long do you think computer power supplies will last?

How long do you think computer power supplies will last?

Even though most people keep using their power supplies until they break, I’d like to encourage everyone to do something sooner rather than later to increase the chances that your computer will work well for longer.

The power supply of a computer should be changed every five years. After this time, a power supply is likely to become less effective,

which could make a system unstable. Most of the damage is caused by old capacitors and other parts, power surges, heat, and other mechanical forces.

Power supplies from high-end brands like Seasonic can last for ten years or more.

Now that we have a general idea of how long a power supply will last, let’s look at the different parts that make up a power supply to get a better idea of how it works.

What are the parts of a power supply?

A power supply is one of the most important parts of a computer. It takes electricity from a wall outlet and changes

it from alternating current (AC) to a useful direct current (DC) voltage, which is usually +12 Volt, +5 Volt, or 3.3 Volt. Older power supplies also had outputs of -12 Volt and -5 Volt.

The motherboard, other internal parts, and computer case all use each type of voltage for different parts.

Even though a laptop doesn’t have a separate power source like a desktop computer does, it still needs one to charge the battery.

Different parts inside a power supply affect how long it will last.

Different parts inside a power supply affect how long it will last.

Like any other electronic device, a power supply is made up of a circuit board on which the parts are arranged and soldered.

The power supply is unusual in that it has a cooling fan to keep the parts inside the metal housing cool.


Just like semiconductors, this is one of the most common parts that cause problems in electronics. As these parts age, their capacitance values change, which affects how well your power supply works compared to when it was first made.

The most common type of capacitor in power supplies is an electrolytic capacitor made of aluminium. The dielectric in these capacitors is made of aluminium oxide. The foil is made of pure aluminium.

It’s hard to say how long an electrolytic capacitor is likely to last. Once the electrolytes have evaporated past a certain point,

however, the capacitor can no longer give the right capacitance value. Computer power supplies are put to the test, especially by gamers and other people who use computers for long periods of time and make them work hard.

This means that the temperature at which capacitors work will probably be higher than in normal applications. Because of this, I think the life span will be shorter than the average of 10 to 20 years.

Depending on how the circuit is made, when the values of capacitors start to change, other parts like resistors and semiconductors may run hotter. Because of this, their life expectancy goes down.


A typical carbon resistor is another part whose value might change as it ages. Resistors can slowly increase in value when heat moves from the electrical side to the thermal side (by their own nature).

Even though this increase might not be as bad as a capacitor, it can still cause strange things to happen, such as computer parts that don’t get enough power.

When a resistor’s power rating is too low for the job at hand, this effect can get worse. This can happen when circuits are built wrong or when the wrong value is chosen, which shortens the life of the component.

Transformers, inductors, and coils are all types of electrical devices.

Most of the time, these are some of the most reliable parts of a power supply. This is true, but I’ve seen a lot of bad transformers in my time, and almost all of them failed because they were poorly designed.

In coils, inductors, and transformers, copper wires covered in enamel are wrapped around a core made of plastic, ferrite, or a magnet.

Some inductors can be made without a core by using thicker wire and putting it on a PCB. These are not the most likely parts to cause a computer’s power supply to fail, unless they are physically broken.

Integrated circuits

Integrated circuits have different life spans. Several things have led to this. Basically, how hot something gets over time is the best way to predict how long it will last

Depending on how well it was made, a part like this might only last a short time.

ICs made by reputable companies can help, but they won’t be the main thing that determines how long they will last.

How long an integrated circuit lasts depends on things like how the circuit is made, how smooth the supply line is, how consistent the voltage supply line is in different situations, and how much load the IC has to handle.

Under the right conditions, ICs can last for a very long time.

Other semiconductors

Other semiconductors, like MOSFETs, transistors, diodes, and voltage regulators, are also important to the life of the power supply in a computer.

Voltages must be the same all the way through the power supply to make sure that each part gets the voltage it needs.Regulators take the supply voltage and turn it into a fixed voltage based on the value of the component.

Semiconductors like MOSFETs and transistors do a lot of the work when it comes to regulating power with higher currents.

With repeated cycles of heating and cooling, these parts lose their efficiency and may start to leak current.

Cooling Fans

When a power supply’s cooling fan stops working, it has a much shorter life span.

The bearing inside fans can stop working when they get old. Either the fan won’t turn at all, or it will turn very slowly.Of course, this is the worst case, and fans often get louder and use more electricity as they get older.

But if the fan slows down enough, the power supply may not cool as well.

On average, a cooling fan will last about 30000 hours, or three and a half years.


As you can see, there are many things to think about when trying to figure out how long a computer power supply can last.Due to the fact that some parts are hard to predict, it is hard to give an exact age.

After five years, some parts, like capacitors, may start to break down and not work as well as they used to.Even though the power supply may work fine, the average user won’t know about the system’s flaws.

When a power supply is getting old, it is more likely to freeze, restart unexpectedly, or shut down. Given that most computers’ power supplies are cheap, it seems like a good idea to get a new one.

James Hope
My name's James and throughout the long term. I have actually assembled numerous PCs for me as well as my companions. I love gaming, programming, illustrations planning and essentially whatever has to do with PCs and innovation.