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What are the Different Motherboard Form Factors? (Mini-ITX (RAM Slots (2),…
What are the Different Motherboard Form Factors?
Mini-ITX
Mini-ITX motherboards had their humble beginnings in 2001 as embedded circuit boards for industrial use.
With the rising popularity of home theater personal computers (HTPC) and small form factor (SFF) computers in recent years, this form factor has emerged into limelight as a popular motherboard choice for pint-sized computers.
RAM Slots
2
RAM Type
DIMM, SODIMM
Graphics Cards
0 to 1
Expansion Slots
1
SATA ports
2 to 6
Maximum Size:17 x 17 cm
6.7 x 6.7 in
MicroATX
When ATX and MicroATX (also known as mATX) motherboards were introduced back in 1995, ATX quickly took over as the most popular form factor for desktop computers while the compact Micro ATX fell by the wayside as a niche product.
Fast forward to today and things are looking quite different - In recent years, Micro ATX has been steadily replacing ATX as the preferred form factor for mainstream consumers.
Maximum Size:24.4 x 24.4 cm
9.6 x 9.6 in
RAM Slots:2 to 4
RAM Type:DIMM
Expansion Slots:2 to 4
Graphics Cards:1 to 3
SATA ports:4 to 8
ATX
Introduced by Intel in 1995 to replace the aging 1980s AT form factor, ATX (Advanced Technology eXtended) quickly became the dominant form factor for desktop computers due to a few reasons: smaller size (easier motherboard installation), improved power design, customizable back panel ports and most important of all... lower manufacturing costs.
Maximum Size:30.5 x 24.4 cm
12 x 9.6 in
RAM Slots:2 to 8
RAM Type:DIMM
Expansion Slots:4 to 7
Graphics Cards:1 to 4
SATA ports:4 to 12
What do They Have in Common?
They can support the same CPU
They run the same graphics cards
Their back panel ports are similar