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Choosing the right power supply unit (PSU) for your needs can be a daunting task, especially when there are so many well-known brands offering excellent PSUs at affordable prices. However, it's not just price and brand that make power supply selection difficult. Manufacturers have recently started (more precisely, from around 2004) to add 80 Plus ratings to their power supplies, making decision-making more difficult. The

80 Plus rating system is used to rate the power of computers, based on reliability and efficiency. This is a system implemented more than ten years ago to clearly classify the types of power supplies.

Although the 80 Plus system looks very technical; once explained, it is actually easy to understand. Let's take a look at the system and the different levels of certification.

As can be seen from the above table, there are six clear power supply classifications. They start with 80 Plus Standard (aka 80+ White) and go up to 80 Plus Titanium. In today's market, you can hardly see power supplies marked with 80 Plus standard ratings because they simply no longer provide a high enough level of reliability or efficiency. Most high-end power supplies have passed the 80 Plus Gold certification, and as you might imagine, the price is much more expensive.

manufacturers apparently abandoned the unpopular 80 Plus Silver rating because they believe that a rating between 80 Plus Bronze and 80 Plus Gold is unnecessary. As can be seen from the above chart, the difference between the different levels of certification is very small, so why provide such a small upgrade on 80 Plus Bronze? When the

Titanium was launched, we saw the market value of the 80 Plus Platinum rated power supply drop significantly. This is good news for anyone who wants to buy a platinum PSU. Titanium is the fourth measure of power efficiency, with a nominal load of 10%.

You can see this in the table below:

Each 80 Plus standard certified power supply will provide at least 80% energy efficiency at 20%, 50%, and 100% load. In addition, each power supply rating must show a power factor of at least 0.9 at 50% load. For those who want to know, the

power factor is another measure of efficiency. It can measure the relationship between the energy entering the power installation and the energy entering the building.

A good way to understand the efficiency of 80 Plus Standard is to give an example. For example; if the power supply draws 375 W of power from a wall outlet and provides 300 W of power to your computer, the efficiency of the power supply is 80%.

This can be calculated by dividing 300 by 375, which equals 0.8, or 80% in our case.

Well, the answer depends on you and what you intend to use your PC for. The choice boils down to several main factors: how quiet you want your build to be, how much you plan to spend, and how safe you want your PC to be.

Power supplies with higher efficiency levels generate less heat. This in turn makes them quieter because the fan is less likely to start during use. For this and many other build quality reasons, more efficient power supplies are more expensive. You can use our power calculator to help you understand the power of the power supply; we also provide recommendations based on the power supply rating.

One factor that produces a lower priority is the security level of the power supply. Now, don't get me wrong; having a standard 80 Plus Bronze power supply is at least not dangerous. However, it is not as secure as the higher-level PSU. This is something you may or may not want to consider, but it is a factor anyway.

Price is ultimately one of the main factors. As we mentioned above, if you are looking for a higher level PSU, you should be ready to buy the advanced features that come with it.

Hope this is easy to understand and now allows you to better understand what the power rating system means for PSUs.

In the end, it's up to you to choose which one best suits your needs, and you're on your own. However, I hope that after reading this article, you have a better measure of which one to choose to move on.

If you have any questions about the power supply, feel free to leave us a message in the section below.

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