Are All ATX Power Supplies the Same Size?

Last Updated on November 5, 2022 by Tech Questions

No, all ATX power supplies are not the same size. The most common sizes are standard, mini, and micro. Standard ATX power supplies are the largest of the three and can be found in most desktop computers.

Mini ATX power supplies are smaller than standard ATX power supplies and are often found in small form factor (SFF) computers. Micro ATX power supplies are the smallest of the three and can be found in some SFF computers and some motherboards that support both microATX and miniATX form factors.

In fact, there are three different sizes of ATX power supplies: standard, mini, and micro. Standard ATX power supplies are the largest of the three and usually have a 20+4 pin connector.

Mini ATX power supplies are smaller than standard ATX power supplies and usually have a 20+2 or 20+4 pin connector. Micro ATX power supplies are the smallest of the three and usually have a 24 pin connector.

History of Computer Power Supplies

Are All ATX PSUs the Same Size?

No, all ATX PSUs are not the same size. In fact, there are three different sizes of ATX PSUs: full-size, mid-size, and mini-size. The most common size is full-size, which is typically used in desktop computers.

Mid-size ATX PSUs are typically used in small form factor (SFF) computers, while mini-size ATX PSUs are typically used in slimline computers.

Are All ATX Power Supplies Compatible?

No, not all ATX power supplies are compatible. The most important factor in determining compatibility is the power supply’s voltage. Most motherboards require a +12V power supply, but some high-end motherboards may require a +24V or even a -12V power supply.

Check your motherboard’s specifications to be sure. Other factors that can affect compatibility are the number of pins on the power connector and the size of the power supply. Some older cases may not have enough room for larger, newer power supplies.

What is the Size of ATX Power Supply?

An ATX power supply is typically either 120mm or 140mm wide, 150mm deep, and 86mm tall. The size of the PSU dictates how many expansion slots are available on the back panel of the motherboard it mounts to—the more space a PSU takes up, the more room for ports.

Are All PC Power Supplies the Same Size?

No, all PC power supplies are not the same size. In fact, there are a variety of different sizes available on the market to accommodate different computer setups. The most common size is ATX, which is typically found in desktop computers.

However, there are also smaller sizes like micro ATX and mini ATX that are designed for smaller form factor computers. Additionally, there are larger sizes like extended ATX and wTX that are meant for more powerful computers or servers.

Are All Power Supplies the Same Size?

No, all power supplies are not the same size. In fact, there can be a significant difference in size between two power supplies that have the same output rating. The size of a power supply is typically determined by its capacity and efficiency.

A higher-capacity power supply will be larger than a lower-capacity unit with the same efficiency. Higher-efficiency units may also be larger than lower-efficiency models. So when choosing a power supply for your computer, it’s important to consider both its capacity and efficiency to get the best combination of size and performance.

ATX Power Supply

An ATX power supply is a type of computer power supply unit (PSU) that is designed to fit in a standard ATX case. It provides the necessary power to all the components of the computer, including the CPU, motherboard, memory, and drives. The most common type of ATX PSU is the ATX12V, which has a voltage rating of 12 volts.

This type of PSU is typically used in desktop computers. The second most common type of ATX PSU is the EPS12V, which has a voltage rating of 8-9 volts. This type of PSU is typically used in servers and high-end gaming PCs.

ATX PSUs are available in a variety of wattages, from as low as 200 watts to as high as 1200 watts. The wattage required depends on the components used in the system. For example, systems with multiple GPUs or overclocked CPUs will require more power than systems with lower-end components.

ATX PSU Dimensions Inches

ATX PSU Dimensions Inches: The ATX power supply unit is the most common type of PSU used in computers today. It comes in a variety of sizes and shapes, but the most common form factor is the standard ATX12V 2.3 specification, which measures 150mm x 86mm (5.9in x 3.35in).

The depth of an ATX PSU can vary from 40mm to 210mm (1.57in to 8.26in), but the average is around 160mm (6.29in).

Conclusion

No, not all ATX power supplies are the same size. In fact, there are four different sizes of ATX power supplies: Standard, Extended ATX, BTX, and Mini-ITX. Each size is designed to fit a specific type of motherboard and case.