A Buying Guide for Alienware Power Supply

If you require a replacement for your laptop or have just purchased a new computer that requires a power supply, selecting an Alienware power supply will allow you to keep your computer running at all times. An Alienware power supply can come with anywhere from 90 watts to 900 watts in power. While you search for a power supply unit on eBay for your Alienware computer, you'll be able to select from many different types.

How do you pair your computer with the power supply?

Many of the power supply units available to you are designed to be used with two or three specific Alienware computers. The smaller PSU units are typically powerful enough to be used with Alienware laptops. On the other hand, Alienware desktops require larger power supply units that can provide enough power to the device for every feature on the computer to work properly. There's no single rule for what you need to focus on when choosing a power supply to pair with your computer. If you perform a large number of tasks on your computer, you may want to select a power supply that comes with a high amount of wattage. One aspect to focus on when trying to pair your computer with the right power supply is the connector that's attached to the power supply. Some connectors are only compatible with certain systems. For instance, a 20+4 pin connector can act as either a 24-pin or 20-pin connector, which means that it can be used with a variety of computers.

How do you know the efficiency of a power supply?

If the efficiency of the power supply is your primary concern when purchasing an Alienware power supply, the most efficient of these systems are typically labeled as:

  • 80 Plus
  • 80 Plus Bronze
  • 80 Plus Silver
  • 80 Plus Gold
  • 80 Plus Platinum
What is the difference between a single-rail and multi-rail PSU?

Alienware power supply units can contain either one +12V rail or multiple rails, which determines how power is sent to your Alienware computer. When you choose a single-rail design, all power from the unit can be used by any component within your computer. When you select a multi-rail system, different computer components are plugged into each separate rail. While this means that the components will be provided with less power, this setup is able to avoid overloading issues and will automatically shut down if any are ever detected.

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