Does Rx 580 Need External Power?

The RX 580 is considered a powerful graphics card that can handle most modern games at high settings. But, the question many people ask is whether or not this graphics card requires external power. The answer is yes.

The RX 580 requires external power to function properly as it draws up to 185W of power. Without an external power source, the graphics card will not be able to run at its full potential. In this article, we will delve deeper into the topic of external power for the RX 580 and explore the different options available for powering this high-performance graphics card.

Does RX 580 Need External Power?

Does RX 580 Need External Power?

Yes, the RX 580 graphics card needs an external power supply for proper operation.

Here are some details about the power requirements of the RX 580:

– The RX 580 typically requires one or two 8-pin power connectors, depending on the specific model of the graphics card.
– These power connectors are located on the side of the graphics card and are used to supply additional power beyond what the PCI Express slot can provide.
– The amount of power required by the RX 580 can vary depending on factors such as the manufacturer, clock speeds, and cooling solution.
– It’s essential to use a power supply that can deliver sufficient power to the graphics card, as inadequate power can lead to instability, crashing, or even damage to the hardware.
– It’s also crucial to make sure that the power supply has the required number and type of power connectors to match the RX 580’s requirements.
– Some models of the RX 580 come with factory overclocking that can increase their power requirements, so it’s important to check the specifications of your specific graphics card.
– Finally, be sure to connect the power cables securely to the graphics card and power supply to ensure reliable operation.


1. Does the RX 580 require external power?
Answer: Yes, the RX 580 graphics card requires external power through an 8-pin PCIe power connector.

2. What is the minimum power supply wattage needed for an RX 580?
Answer: A minimum of 500W power supply is recommended for the RX 580, and it must have an 8-pin PCIe power connector.

3. Can I use a lower wattage power supply for my RX 580?
Answer: It is not recommended to use a lower wattage power supply than the recommended 500W for the RX 580, as it may cause instability and damage to both the card and the system.

4. Can I use a Molex to PCIe adapter for the RX 580 external power connection?
Answer: While some Molex to PCIe adapters may work for the RX 580, it is not recommended as it can lead to power delivery issues and potentially damage the graphics card.

5. Is external power necessary for the RX 580 to function?
Answer: Yes, external power through an 8-pin PCIe power connector is necessary for the RX 580 to function properly and to provide optimal performance.


After careful consideration of the topic, it is clear that the RX 580 graphics card does indeed need external power to function at its full potential. This power requirement is due to its powerful performance and advanced features, which demand a high level of energy consumption. Therefore, if you plan on installing the RX 580 in your gaming rig or workstation, be sure to ensure that your power supply unit can provide the necessary power output for smooth and stable performance. It is always recommended to consult the manufacturer’s guidelines and specifications to avoid any compatibility issues and maximize the potential of your hardware. Despite the need for external power, the RX 580 remains a popular choice among gamers and professionals for its exceptional graphics performance and affordability.

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