How Much PSU For RX 580



Welcome to our guide on how to determine the right power supply unit (PSU) for the RX 580 graphics card. If you’re planning to build or upgrade your gaming rig and have chosen the powerful RX 580, it’s crucial to ensure that your PSU can supply enough power to run it optimally.

The PSU, often overlooked by PC builders, is a vital component that provides power to the various hardware components within your computer. It is responsible for converting and delivering the required electrical energy to your system, ensuring its stable and efficient operation. While it may seem like a technical aspect, understanding the power requirements of your GPU, specifically the RX 580, is essential for both performance and longevity.

The RX 580 is a popular choice among gamers for its robust performance and affordability. However, this powerful GPU demands a substantial amount of power to function properly, which means selecting the appropriate PSU is crucial to avoid potential issues like instability, shutdowns, or even damage to the components.

In this guide, we will walk you through the process of calculating the required wattage for your PSU based on the power consumption of the RX 580. We will also discuss the factors that influence PSU power consumption and provide recommendations for reliable PSUs that can handle the RX 580’s power requirements effectively.

Whether you’re a novice PC builder or a seasoned enthusiast, understanding the relationship between your GPU and PSU is essential to create a well-balanced and efficient system. So let’s delve into the world of PSUs and power requirements to ensure that your RX 580 is powered properly!


What is a PSU?

A Power Supply Unit (PSU) is an essential component of a computer that converts the alternating current (AC) from your electrical outlet into direct current (DC) that your computer’s components can utilize. It supplies the necessary power to all the hardware components, including the motherboard, processor, graphics card, storage devices, and peripherals.

The PSU acts as the backbone of your PC’s power delivery system, ensuring that all components receive a consistent and reliable power supply. It prevents voltage fluctuations and delivers the appropriate voltage and current required by each component. A stable and efficient PSU is crucial for the overall performance, stability, and longevity of your computer system.

The PSU’s capacity is measured in watts (W) and determines how much power it can provide to the components. It is essential to choose a PSU with sufficient wattage to meet the demands of your components. Insufficient power supply can lead to system instability, crashes, and even component failure.

PSUs come in various form factors and power ratings, ranging from 300W for basic systems to over 1000W for high-end gaming rigs or workstations. When choosing a PSU, it is important to consider not only the total power needed but also the quality of the components used, such as capacitors and voltage regulation.

In addition to delivering power, PSUs also include features like over-current protection, over-voltage protection, and short-circuit protection to safeguard your components from potential damage. They also come with connectors of different types, such as 24-pin ATX, 8-pin EPS, SATA, and PCIe, to ensure compatibility with the various hardware components.

Overall, a PSU plays a vital role in maintaining the stability and efficiency of your computer system. It is important to invest in a quality and appropriate PSU that meets the power requirements of your components to ensure optimal performance and reliability.


Power Requirements of the RX 580

When it comes to gaming graphics cards, the power requirements can vary significantly depending on the model and its intended use. The RX 580, a popular mid-range GPU from AMD, is known for its excellent performance in 1080p and 1440p gaming. To ensure smooth and stable operation, it’s important to understand the power requirements of this graphics card.

The RX 580 typically has a rated TDP (Thermal Design Power) of around 185 watts. However, it’s important to note that this is just the maximum power consumption guideline provided by the manufacturer. The actual power draw of the RX 580 can vary depending on several factors, including clock speeds, voltage settings, and system load.

Under normal gaming conditions, the power draw of the RX 580 can range from 120 watts to 180 watts. During intense gaming sessions or when overclocked, it may consume even more power. Additionally, if you’re running other power-hungry components, such as a high-end CPU or multiple storage drives, the overall power requirements of your system will increase accordingly.

In terms of power connectors, most RX 580 models require an 8-pin PCIe power connector, though some versions may require a combination of 6-pin and 8-pin connectors. It’s essential to ensure that your chosen PSU has the appropriate power connectors to support the RX 580, as using incorrect or insufficient connectors can adversely affect performance or cause instability.

It’s worth noting that the power consumption of the RX 580 can be influenced by factors such as the quality of the power supply, cooling efficiency, and GPU workload. Using a high-quality PSU with efficient power delivery and stable voltage regulation can help maintain optimal power consumption and ensure a smooth gaming experience.

Understanding the power requirements of the RX 580 is crucial for selecting the right power supply unit for your system. In the next section, we’ll discuss how to calculate the PSU wattage required to power your RX 580 and other system components effectively.


How to Calculate your PSU Wattage

Calculating the required wattage for your PSU is essential to ensure that it can provide enough power to all the components in your system, including the power-hungry RX 580. Fortunately, determining the appropriate PSU wattage is a relatively straightforward process. Here are the steps you can follow:

  1. Identify your components: Make a list of all the hardware components in your system, including the RX 580, CPU, motherboard, storage drives, RAM, and other peripherals.
  2. Find their power requirements: Consult the specifications of each component or check their labels for their respective power consumption. Look for values in watts or amperes (A).
  3. Add up the power: Sum up the power requirements of all the components. Ensure that you account for any overclocking or future upgrades.
  4. Consider a safety margin: It’s recommended to add a safety margin of around 10-20% to your total power calculation to ensure stable operation and accommodate for any power spikes or increased loads.
  5. Choose the appropriate PSU wattage: Once you have the total power requirement, select a PSU that comes closest to or exceeds that calculated value. Round up to the nearest available PSU wattage.

For example, if your RX 580 requires 185W, your CPU needs 95W, your other components add up to 150W, and you add a 20% safety margin, your total power requirement would be:

RX 580 (185W) + CPU (95W) + Other components (150W) = 430W

In this case, you would want to choose a PSU with a wattage rating above 430W, such as a 500W or 550W PSU, to ensure adequate power supply for your system.

Keep in mind that the above calculation is a general guideline. Depending on your specific system configuration and usage, you may require slightly more or less wattage.

By accurately calculating the PSU wattage required for your system, you can ensure optimal performance and stability, while also allowing room for potential upgrades in the future. In the following section, we will explore the factors that can affect PSU power consumption.


Factors that Affect PSU Power Consumption

While calculating the PSU wattage based on the power requirements of your components is a good starting point, there are several other factors that can influence the actual power consumption and efficiency of your PSU. Understanding these factors will help you better gauge and manage the power demands of your system. Here are some key factors that can affect PSU power consumption:

  1. Component Efficiency: The efficiency of your components plays a crucial role in determining power consumption. Higher efficiency components, such as a more power-efficient CPU or GPU, can reduce power demand and result in lower PSU wattage requirements.
  2. Overclocking: Overclocking your CPU or GPU can significantly increase power consumption. When overclocking, it’s important to account for the additional power requirements and choose a PSU with a higher wattage rating.
  3. Usage and Workload: Different tasks and workloads can have varying power demands. Running intensive applications, such as video editing or gaming, can draw more power from your PSU compared to basic web browsing or document editing.
  4. Number of Peripherals: The number and type of peripherals connected to your system, such as USB devices, external hard drives, or RGB lighting, can increase the overall power consumption and put additional strain on your PSU.
  5. Cooling Efficiency: Efficient cooling systems can impact power consumption. A well-cooled system can operate more efficiently and reduce the power demand on the PSU, while inadequate cooling can lead to higher power draw.
  6. PSU Efficiency: The efficiency rating of your PSU, typically indicated by the 80 Plus certification (e.g., 80 Plus Bronze, Silver, Gold, etc.), determines how effectively it converts AC power to DC power. A higher-efficiency PSU will waste less energy as heat and result in lower power consumption.

Keep in mind that the power consumption of your PSU can vary depending on the combination of these factors. It’s essential to consider these factors when selecting a PSU to ensure that it can handle the power demands of your system effectively.

Now that we’ve discussed the factors that can influence PSU power consumption, let’s move on to the next section, where we’ll explore how to choose the right PSU for the RX 580.


Choosing the Right PSU for the RX 580

When it comes to selecting the right PSU for your RX 580 graphics card, there are a few key factors to consider. Ensuring that your PSU can supply enough power to meet the requirements of the RX 580 is crucial for optimal performance and system stability. Here are some factors to keep in mind:

  1. Power requirements: As discussed earlier, determine the total power requirements of your system, considering the power draw of the RX 580 and other components. It’s recommended to choose a PSU with a wattage rating that exceeds your calculated power requirements to allow for future upgrades and to maintain efficiency.
  2. Quality and efficiency: Invest in a high-quality PSU from a reputable manufacturer. Look for PSUs with a solid build quality, good reviews, and high efficiency ratings, such as 80 Plus Bronze, Silver, Gold, or Platinum. A more efficient PSU not only reduces energy waste but also runs cooler and quieter.
  3. Modularity: Consider whether you prefer a modular, semi-modular, or non-modular PSU. Modular PSUs allow you to connect only the cables you need, reducing cable clutter and improving airflow within your system.
  4. Compatibility: Ensure that the PSU you choose has the necessary connectors to support your RX 580 and other components. Check for the required PCIe power connectors (usually 8-pin or a combination of 6-pin and 8-pin), as well as sufficient SATA and peripheral connectors.
  5. Reliability and warranty: Look for PSUs with reliable and durable components, as well as a good warranty period. A longer warranty indicates the manufacturer’s confidence in their product’s quality.

Additionally, it’s worth researching and reading reviews to gather insights from other users who have used the PSU you are considering. Their experiences can provide valuable information about the reliability, performance, and noise levels of the PSU.

Some PSU models that are known to be reliable and efficient choices for the RX 580 include offerings from reputable brands such as Corsair, EVGA, Seasonic, and Thermaltake. Ensure that you carefully compare the specifications, wattage ratings, and features of different models to find the best PSU that suits your specific needs.

By considering these factors, you can choose a PSU that not only provides sufficient power for your RX 580 but also ensures long-term reliability and efficient operation for your entire system.

In the next section, we will provide some recommendations for reliable PSUs that can handle the power requirements of the RX 580.


Recommended PSUs for RX 580

When it comes to selecting a power supply unit (PSU) for your RX 580, there are several reliable options available on the market. These PSUs are known for their performance, efficiency, and reliability, making them suitable choices for powering your RX 580 and ensuring the smooth operation of your gaming rig. Here are some recommended PSUs:

  1. Corsair RM650x: This 650W modular PSU from Corsair offers excellent efficiency, reliability, and quiet operation. It is 80 Plus Gold certified and features fully modular cables, providing flexibility and improved cable management.
  2. EVGA Supernova 650 G5: The EVGA Supernova 650 G5 is a 650W PSU known for its high efficiency and reliable performance. It is 80 Plus Gold certified, offers fully modular cables, and comes with a 10-year warranty, ensuring peace of mind.
  3. Seasonic Focus Plus Gold 650: Seasonic is renowned for producing high-quality PSUs, and the Focus Plus Gold 650 is no exception. It provides 650W of power with 80 Plus Gold efficiency, fully modular cables, and a 10-year warranty.
  4. Thermaltake Toughpower Grand RGB 650W: If you’re looking for a PSU that combines performance with aesthetics, the Thermaltake Toughpower Grand RGB 650W is a great option. It offers reliable power delivery, 80 Plus Gold certification, fully modular cables, and customizable RGB lighting.
  5. Be Quiet! Straight Power 11 650W: Be Quiet! is known for its silent and efficient PSUs, and the Straight Power 11 650W is a testament to that reputation. It provides stable power, 80 Plus Gold efficiency, and features a virtually silent 135mm fan.

These PSUs offer the wattage and features required to power the RX 580 effectively. However, it’s important to note that the specific PSU you choose should align with your power requirements, budget, and preferences.

Before making a final decision, ensure that you thoroughly research and compare the specifications, features, and customer reviews of the PSUs you are considering. Consider factors such as efficiency, warranty period, noise levels, and additional features like modular cables or RGB lighting.

Remember, choosing a reliable and efficient PSU helps ensure stable power delivery to your components, prolongs the lifespan of your system, and safeguards against potential issues such as voltage fluctuations or component damage.

Now that you have a list of recommended PSUs, you can make an informed decision and select the one that best suits your needs and budget. With a reliable PSU, you can power your RX 580 with confidence and enjoy smooth and uninterrupted gaming performance.



Choosing the right power supply unit (PSU) for your RX 580 is crucial to ensure optimal performance, stability, and longevity of your gaming rig. By understanding the power requirements of the RX 580 and considering factors such as component efficiency, usage, and cooling, you can accurately calculate the required PSU wattage.

When selecting a PSU, it’s important to prioritize quality, efficiency, and compatibility. Investing in a reputable brand, choosing a high-efficiency PSU, and ensuring that it has the necessary connectors for your components will go a long way in providing reliable and efficient power supply.

We have provided a list of recommended PSUs, including options from Corsair, EVGA, Seasonic, Thermaltake, and Be Quiet!, known for their reliability and performance. However, it’s crucial to research and compare different models to ensure the chosen PSU aligns with your specific requirements and preferences.

Remember to calculate the total power requirements of your system, consider a safety margin, and plan for future upgrades. By doing so, you can ensure that your chosen PSU can handle the power demands of the RX 580 and other components effectively.

Building a well-balanced gaming rig not only provides a seamless gaming experience but also ensures your system runs efficiently and reliably. A strong and capable PSU is an integral part of this process, delivering consistent and clean power to your components.

We hope that this guide has provided you with valuable insights and recommendations for choosing the right PSU for your RX 580. With the right PSU, you can power your RX 580 with confidence, maximizing its performance and enjoying your gaming adventures to the fullest.

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