Generally, most standard ATX motherboards have a thickness of around 1. A motherboard's thickness is influenced by several factors, including: One of the primary factors affecting motherboard thickness is the layer count. Now we'll go a little more into what features these different sizes usually carry and what use. In computer design, microATX (sometimes referred to as mATX or µATX) is a standard motherboard form factor introduced in December 1997. Note: Sizes are approximations, check product listing for exact dimensions •. The smallest standardized, commercially available motherboard for consumer desktop PCs is Mini-ITX at 170 × 170 mm —but as of mid-2024, it's no longer the absolute smallest option on the market 1. Proprietary boards derived from mini PCs (e.
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