How to make sure a new motherboard will fit your pc?

Solution 1:

If you're concerned about the actual dimensions, you just need the specs for the case and motherboard from the manufacturers. They generally list the form factor for the motherboard, and which the case supports. As long as they're in sync, you're good to go.

Common form factors are: ATX, mini-ITX, micro-ATX, extended ATX. There are a few others but they're pretty niche. If this is a standard desktop tower-style machine the overwhelming odds are that you've currently got a standard ATX or micro-ATX motherboard.

(EDIT: Note that OEM machines, like from Dell or HP, may often have proprietary mounting points or I/O plate alignment. You generally can't just throw any old motherboard in a case like that.)

Solution 2:

the motherboards are of different architecture for each processor it supports, so when you need to replace the motherboard for a particular processor then go for same architecture as your existing motherboard which will ideally suit the CPU architecture.

Solution 3:

here are Motherboard form factors, but you also have to think about:

• the size of CPU cooler
• PSU size/compatibility
• size of eventual videocard if you will use a discrete one