As we all know, the number one rule for anything you're buying is that it fits. This goes for computer cases as well. The other question most people look to when they start planning out their build is whether or not their motherboard will fit it. Although there are instances where a smaller form factor like Mini-ITX might work in a case that's already filled to the brim with other components, if your motherboard has twice as many PCIe slots, you'll need a bigger case. And even still, your PSU might be too big and push up against the graphics card in your graphics card power supply unit (PSU). However, suppose everything fits within its limits of size. In that case, you might be able to just hide wires and cables under the motherboard because there's no way they can actually get into your system otherwise!
Common sizes of motherboards
When you're buying a new computer case, it's important to know the common sizes of motherboards. Most cases are built to fit either a standard ATX motherboard or a micro-ATX motherboard. While there are some exceptions, these are the most common sizes. The following list outlines the different motherboard sizes and the typical case that will fit them.
Micro-ATX: Typically found in small to medium-sized computers, this size motherboard requires a small computer case that is around 2 inches high, 1 inch wide, and 5 inches deep.
ATX: The most popular size of motherboards, ATX boards fit in most cases supplied by computer manufacturers. Cases designated for ATX boards generally measure between 3 inches and 5 inches high, 2 inches wide, and 7 inches deep.
Mini-ITX: Designed for smaller systems, mini-ITX boards measure just 1 inch by 1 inch. Because of this small size, many mini-ITX boards require special cases that are not usually designed for computers.
Standard ATX: The largest size of motherboards offered by most manufacturers, standard ATX boards can accommodate larger towers and allow for more features and expansion slots than
Can I make my motherboard fit in my computer case?
If you're like most computer users, your motherboard is your computer's largest and heaviest component. Because of this, many cases are not designed to house a motherboard. Luckily, most motherboards fit into most cases by using a standoff tube or bracket. If your case doesn't have a bracket or tube available, you may need to purchase one. Additionally, if your case has expansion slots on the front or rear panel, insert your board so that the PCIe slots are facing outwards. Most cases also require that you remove the keyboard/mouse tray before inserting your motherboard.
If not, is a custom build required?
If your motherboard measures at least 16.4 inches wide by 8.3 inches deep by 1.6 inches high, it should fit in most computer cases. However, if you're using an old case or one that's not on the latest trends, it might be best to get a custom build. Many cases have increased dramatically in size over the years, so it's important to find one that appropriately fits your motherboard and other hardware.
Conclusion
Whether you're a beginner computer builder or an experienced enthusiast, selecting the right motherboard for your build is important. If you're not sure if your motherboard will fit in your computer case, use our guide to help determine if it will. We've listed the dimensions of popular cases and provided links to purchase the correct size motherboard to be confident that it will work with your chosen case. Just remember to double-check the dimensions before making a purchase!