how to choose E-ATX, ATX, M-ATX or ITX motherboard?

What are they?

E-ATX, ATX, M-ATX, and ITX are all form factors used in the design of computer motherboards.

E-ATX (Extended ATX) is a motherboard form factor that is larger than the standard ATX size. E-ATX motherboards are designed to provide additional space for more expansion slots, memory slots, and other features.

E-ATX motherboards typically measure 12 x 13 inches (305 x 330 mm), making them significantly larger than standard ATX motherboards. E-ATX motherboards also have more mounting holes than standard ATX motherboards, which helps to provide additional support for heavy expansion cards.

E-ATX motherboards are typically used in high-end workstations, gaming PCs, and server systems that require a large number of expansion cards or high-end components. E-ATX motherboards are generally more expensive than standard ATX motherboards and require a larger computer case to accommodate them.

ATX (Advanced Technology eXtended) is a standard developed by Intel in 1995 for full-sized desktop computer motherboards. ATX motherboards typically measure 12 x 9.6 inches (305 x 244 mm) and have seven expansion slots.

M-ATX (Micro ATX) is a smaller form factor developed by Intel in 1997 as an alternative to the full-sized ATX standard. M-ATX motherboards are typically 9.6 x 9.6 inches (244 x 244 mm) and have four expansion slots. M-ATX motherboards are often used in smaller desktop computer cases or home theater PCs.

ITX (Information Technology eXtended) is a form factor developed by VIA Technologies in 2001 for small form factor (SFF) desktop computers. ITX motherboards are even smaller than M-ATX motherboards, with the most common size being 6.7 x 6.7 inches (170 x 170 mm). ITX motherboards typically have one or two expansion slots and are often used in ultra-compact desktop computers, home theater PCs, and embedded systems.

how to decide to use E-ATX, ATX, M-ATX or ITX?

The choice of which motherboard form factor to use depends on several factors, including your budget, intended use, available space, and expansion needs.

Here are some factors to consider when deciding which form factor to use:

  1. Budget: Generally, larger form factor motherboards tend to be more expensive than smaller ones. Therefore, if you are on a tight budget, you may want to consider a smaller form factor like ITX or M-ATX.
  2. Intended Use: The intended use of your computer will also influence your choice of motherboard form factor. If you are building a gaming PC or workstation that requires high-end components and multiple expansion cards, an E-ATX or ATX motherboard may be the best choice. On the other hand, if you are building a compact HTPC or media center PC, an ITX or M-ATX motherboard may be more appropriate.
  3. Available Space: The available space in your PC case is also an important consideration. Larger form factor motherboards may require larger cases to accommodate them, while smaller form factors can fit in more compact cases.
  4. Expansion Needs: The number and type of expansion cards you plan to use will also influence your choice of motherboard form factor. If you need to install multiple graphics cards or other expansion cards, an E-ATX or ATX motherboard may be necessary. However, if you only need one or two expansion slots, an M-ATX or ITX motherboard may be sufficient.

In summary, choosing the right motherboard form factor requires careful consideration of your budget, intended use, available space, and expansion needs. By taking these factors into account, you can make an informed decision about which form factor is best for your build.

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