Topic: Tower case sizes
June 16, 2019 / By Rodney Question:
I know enough about computers to be able to build my own but since I have never built my own the mobo and case sizes have never been a problem for me. I am in the process of buying parts to build my first PC and I can't figure out if a full size ATX case will be able to house a standard size ATX mobo. I know that some will because I have seen some that do. Though I am not sure if ALL full sizes cases will.
Mike | 1 day ago
Common standards for ATX go: mATX, ATX, eATX. "Full" and "Standard" are not names for ATX standards. Generally, a case that's designed for a larger type of board will take all of the smaller ones too. So an eATX case will take eATX, ATX, and mATX. An ATX case will take ATX and mATX. An mATX case will only take mATX.
What "full size" means in this context is not related to the size of the motherboard, but the size of the case itself. All ATX cases will take ATX motherboards, whether it is mini-tower, mid-tower, full-tower, or super-tower (because that's apparently a thing now). The tower size only indicates the number of expansion bays you can expect to find on the case, with larger cases having more room for hard drives and optical drives (and things that use the 5.25" bays on the front).
eATX is larger (prolonged ATX). WATX is via some distance the main important. maximum twin CPU boards will use eATX. Any conventional ATX board or microATX ought to slot on your case with none difficulty whatsoever.