If you want to build a budget-friendly gaming PC, your best bet is to go with a micro-ATX motherboard. The only real difference is that standard ATX motherboards offer better aesthetics, more PCIe slots, and beefier VRMs for overclocking.
Is there a downside to Micro-ATX?
There are however a lot of downsides to a mATX board that you should know about. They have less RAM slots ( usually 2 instead of 4 in many ATX boards ) and less expansion slots. Also they're not really designed for large video cards, overclocking and hardcore gaming.
Does Micro-ATX affect performance?
Performance is largely determined by the components you choose to attach to the motherboard, not the motherboard's form factor. A larger board will usually have more expansion slots though, so just be sure the board you choose will meet your requirements in that respect.16 Nov 2019
Are Micro-ATX motherboards slower?
Reputable. No, mATX motherboards are not "slower" than ATX motherboards. mATX motherboard may have less features or less overclocking potential. There is no price difference between mATX and ATX motherboards.29 Jun 2016
Are all micro ATX motherboards the same?
Well they all have the same width, but the length can vary. Not just from AMD to Intel, but in Intel and AMD motherboards.31 Jul 2009
What size motherboard fits in a micro ATX?
244 × 244 mm
Can I put a Micro ATX motherboard in an ATX case?
Backward compatibility microATX was explicitly designed to be backward-compatible with ATX. The mounting points of microATX motherboards are a subset of those used on full-size ATX boards, and the I/O panel is identical. Thus, microATX motherboards can be used in full-size ATX cases.