80 Plus Certification Explained: Why Efficiency Matters in Power Supplies

Introduction

Power supply units (PSU) have come a long way from proprietary technologies to the latest ATX 3.0 designs for PCs. Certifications like 80 Plus have made power supply purchasing convenient for consumers. It ensures high efficiency performance from the power supply by passing it through a series of standardized tests. 80 Plus is now one of the most trusted certifications ever, one that retailers and consumers demand on the product box.

The 80 Plus certification ensures that the power supply converts the AC supply from the wall socket to DC power required by PC components without releasing too much heat. It also helps keep the energy bill under control.

If you are looking to develop a deep understanding of 80 Plus certification, then you are at the right place. This blog will introduce you to the 80 Plus certification, testing process, and levels. By the end, the user will have a clear idea of why efficiency matters for power supplies. Let's begin with the basics:

What is 80 Plus Certification

History

In the early 2000s, computers were wasting a lot of energy. As consumers became environmentally aware, the Electric Power Research Institute and Ecos Consulting worked together to introduce the 80 Plus program in 2004. In 2007, the certification became mainstream when it was incorporated into Energy Star 4.0.

Core Working Concept

The certification checks how the PSU converts the AC current into DC current. It ensures that the efficiency of the PSU remains stable across multiple power levels. The PC power supply manufacturer shouldn't just mention peak efficiency at low load.

To get the 80 Plus certification badge for a manufactured PC power supply, it needs to meet the following two criteria:

• Energy Efficiency: The PSU needs to maintain efficiency greater than 80 percent at 20%, 50%, and 100% load, respectively.
• Power Factor: It needs to maintain a power factor above 0.9 or higher at full load. It shows how effectively the PSU uses the incoming current.

Note: The testing does take into account regional aspects like 115V or 230V wall supply, depending on different regional grids.

The Need for 80 Plus Certification

Before the 80 Plus certification was introduced, there were substandard power supplies being sold in the market. Under the gaming label, retailers were selling low efficiency, underpowered PSUs to consumers. One of the key signs of high quality power supply was its weight. Off-brand manufacturers actually glued weights inside the PSU to make it appear heavy and premium. When connected, they worked and booted up the PC. However, they consumed too much electricity and stopped working soon after the expiration of the warranty period.

80 Plus certification came into effect to ensure that the power supply was up to the international standards for efficiency and longevity.

Certification Testing Process

To fully understand the certification process, we need to take a look at their preliminary condition, the test requirements, and the criteria. Every PC power supply manufacturer needs to pay a one time fee per model. It gives them the legal right to display the 80 Plus Logo on their PSU packaging and product. The first step is allowing the internals of the power supply to reach an equilibrium state.

Achieving Pre-Test Conditions

Before the test starts, the power supply should reach the true representative temperature of normal PC operation. It is kept on for 30 minutes or five full fan cycles. It is important because the internal components of the PSU, like the transformer and electronics, behave differently in a warm state.

AC to DC Conversion

We know that the formula for efficiency is output divided by input. In PSUs, it's written as:

These readings are taken at 20%, 50%, and 100% loads. The power supply should also maintain a power factor greater than 0.9, and for top tier power supplies, it should be greater than 0.95.

Additional Criteria for Premium Grade

For the top-tier power supply, an additional test of 10% load is added. Most gaming PCs sit idle most of the time. There is a need to ensure that the PSU remains efficient even when the user is performing non-processing intensive work.

Key Details

While performing the test, it's vital to maintain the environmental and electrical conditions for all PC power supply units. Here are the details:

• Efficiency Testing Below 50 C Ambient Temperature
• Fans Must Run at a minimum speed, not zero rpm.
• Standby Power will Also Be Measured but excluded from the final 80 Plus Rating.

Levels of 80 Plus Certification

80 Plus rates the power supplies tested into six major categories. Here are their details that can prove to be useful for consumers:

80 Plus (White)

It is the baseline power supply rating. A white category power supply offers the bare minimum efficiency of 80% across all loads.

80 Plus Bronze

A slight but significant increment (82/85/82%). This is what most PC enthusiasts call the minimum viable product because they know that the manufacturer did not cut corners to achieve the bare minimum required.

80 Plus Silver

These are great for their efficiency increment, but due to the slight price difference from gold. It is rarely available as PC power supply manufacturers consider 80 Plus Gold and Bronze as more value-oriented choices.

80 Plus Gold

The performance standard in the industry. It has a 90 percent efficiency at half load, which is in the sweet spot. Because the majority of PCs are designed with a small amount of headroom (i.e., they tend to run at about half capacity), a Gold unit can be at its most efficient when you are playing a game.

80 Plus Platinum

Hits 92 percent efficiency and creates more stringent Power Factor regulations. They are best suited to PCs that are 24/7 or that are massive power consumers for rendering videos.

80 Plus Titanium

The king of consumer PCs today. It is the only level that needs a test with 10% load (90%). This is important since in modern PCs, the amount of time in an idle state consumes significant power, and PSUs are known to have very low efficiency at low loads. Titanium will make sure that you are not wasting power and simply sitting at the desktop.

Why Efficiency Matters for Your PC Power Supply

Efficiency, as we mentioned earlier, is the ratio between the output power, which is in DC, and the input power, which is AC taken from the wall outlet. Now let's take an example:

You buy a 650W power supply with 80 Plus Bronze certification. It runs at 80% efficiency, which means 650/0.8 = 812.5W. You are drawing approximately 800W from the wall outlet. The remaining 162W is released into the space where the PC exists in the form of heat. So any low-efficiency PC power supply results in:

• Excess Internal Waste Heat
• Hardware Component Degradation
• Loud Cooling Fan Noise
• Electrical Voltage Ripple
• Higher Monthly Electricity Bills
• Wasted Total Power Capacity
• Reduced System Reliability
• Increased Carbon Emission

Conclusion

The rising demand for graphics cards and CPU for power is compelling PC power supply manufacturers to produce efficient supplies. 80 Plus certification authenticates their products' performance to assist consumers in buying a standardized product. Ensuring that the power supply has good efficiency is vital to avoid significant problems such as heat generation, fan noise, hardware degradation, insatiable system, and more.

80 Plus certification categorizes its tested power supply based on its performance under 10%, 20%, 50%, and 100% load. The categories all ensure higher than 80% efficiency. If you are looking for Bronze to Titanium grade power supplies, then consider ESGAMING.

Founded in 2017, ESGAMING has quickly become a recognized emerging brand in high-performance computer components and accessories. From PC cases and power supplies to cooling systems, ESGAMING is dedicated to delivering creative, reliable, and well-crafted E-sport solutions for gamers, creators, and PC builders around the world.

For more information, visit www.esgamingpc.com