Motherboards under $100

AM5, mATX, DDR5, 1 M.2 slots

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GIGABYTE A620M S2H (AM5/ LGA 1718/ AMD/ A620/ Micro ATX/ 5-Year Warranty/ DDR5/ Single M.2/ PCIe 4.0/ USB 3.2 Gen1/

$89.99as of 11/03/2026 23:11 PST - Details

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Spec score8.1

Pros

+Uses AM5 socket for newer Ryzen processors

+Supports DDR5 memory

+Includes PCIe 4.0 support

+Includes USB 3.2 Gen1 ports

+Includes single M.2 slot

Cons

−Only one M.2 slot limits fast storage expansion

Compared with the 9 motherboards on this page

+1G: only 4 of 29 here have a higher wired lan

−1 m.2 slots: 10 of the 19 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

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AM4, mATX, DDR4, 2 Memory slots

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ASRock B550M-HDV Socket AM4 Micro-ATX Motherboard, Supports AMD Ryzen 5000/4000/3000 Series Processors, DDR4 4733+(OC),

$69.99as of 11/03/2026 21:56 PST - Details

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Spec score8.0

Pros

+Micro-ATX form factor fits compact builds

+Supports AMD Ryzen 3000, 4000 and 5000 processors

+Supports DDR4 memory with overclocking up to 4733 MHz

+Includes one M.2 slot for fast storage

+Four SATA ports for additional drives

Cons

−Only two RAM slots limit total memory capacity

Compared with the 9 motherboards on this page

+1G: only 4 of 29 here have a higher wired lan

+4 sata ports: only 2 of 14 here have more sata ports

−1 m.2 slots: 10 of the 19 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

Other stores (2)

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AM4, ATX, DDR4, 1 PCIe x16 slots

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ASRock AMD B550 PG Riptide ATX Motherboard Dual Channel DDR4 4933 MHz AM4 Socket 128 GB SATA3 6.0 Gb/s M.2

$89.99as of 11/03/2026 21:56 PST - Details

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Spec score8.3

Pros

+Standard ATX form factor offers room for expansion cards

+Four SATA ports for connecting multiple drives

+Built on the AMD B550 chipset

Cons

−Only one M.2 slot for solid-state storage

−Only one PCIe x16 slot limits expansion options

Compared with the 9 motherboards on this page

+1 pcie x16 slots: only 2 of 20 here have more pcie x16 slots

+4 sata ports: only 2 of 14 here have more sata ports

−1 m.2 slots: 10 of the 19 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

About this product

LGA1700, mATX, 1 PCIe x16 slots, 1 M.2 slots

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ASRock H610M Combo II Micro-ATX Motherboard, Supports Intel 14th/13th/12th Gen Core Processors (LGA1700), Combo Slot

$79.99as of 11/03/2026 21:56 PST - Details

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Spec score8.2

Pros

+Supports Intel 14th, 13th and 12th Gen processors

+Four SATA ports for additional drives

+One M.2 slot for storage

+Micro-ATX form factor for compact builds

Cons

−Only one PCIe x16 slot for expansion cards

Compared with the 9 motherboards on this page

+1 pcie x16 slots: only 2 of 20 here have more pcie x16 slots

+1G: only 4 of 29 here have a higher wired lan

+4 sata ports: only 2 of 14 here have more sata ports

−1 m.2 slots: 10 of the 19 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

About this product

AM4, mATX, DDR4, 4 Memory slots

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MSI PRO B550M-P Motherboard, mATX - Supports AMD Ryzen 5000/5000 G-Series, 4000 G-Series, 3000 G-Series Desktop

$89.99as of 11/04/2026 00:18 PST - Details

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Spec score8.2

Pros

+Compact mATX form factor

+Four RAM slots for DDR4 memory

+AM4 socket supports AMD Ryzen 5000 and older series processors

Cons

−Only 1G LAN for wired networking

−Uses DDR4 memory rather than newer DDR5

−Single M.2 slot limits fast storage expansion

Compared with the 9 motherboards on this page

+4 memory slots: only 1 of 21 here have more memory slots

+1 pcie x16 slots: only 2 of 20 here have more pcie x16 slots

+1G: only 4 of 29 here have a higher wired lan

−1 m.2 slots: 10 of the 19 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

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LGA1200, ATX, DDR4, 1 PCIe x16 slots

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XUMIUZIY ATX Motherboard LGA1200, DDR4 Motherboard with 64GB 2933MHz

$73.68as of 11/04/2026 09:06 PST - Details

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Spec score8.2

Pros

+ATX form factor with room for expansion

+Socket LGA1200 with DDR4 memory support

+Supports up to 64GB at 2933MHz

+One M.2 slot for fast storage

+1G LAN ports for wired networking

Cons

−Only one PCIe x16 slot for graphics cards

Compared with the 9 motherboards on this page

+1 pcie x16 slots: only 2 of 20 here have more pcie x16 slots

+1G: only 4 of 29 here have a higher wired lan

−1 m.2 slots: 10 of the 19 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

About this product

LGA1851, mATX, DDR5, 2 Memory slots

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ASRock H810M-H LGA1851 Micro-ATX Motherboard, Supports Intel Core Ultra Series 2 Processors, DDR5 6400, PCIe 4.0,

$79.99as of 11/03/2026 21:56 PST - Details

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Spec score8.1

Pros

+Supports Intel Core Ultra Series 2 processors

+DDR5 memory support

+PCIe 4.0 support

+Four SATA ports for additional drives

+One M.2 slot for storage

Cons

−Only two RAM slots for memory expansion

−Only one PCIe x16 slot for expansion cards

Compared with the 9 motherboards on this page

+1 pcie x16 slots: only 2 of 20 here have more pcie x16 slots

+1G: only 4 of 29 here have a higher wired lan

+4 sata ports: only 2 of 14 here have more sata ports

−1 m.2 slots: 10 of the 19 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

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4 Memory slots, 1 PCIe x16 slots, 1 M.2 slots, 4 SATA ports

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OLurkthu Motherboard with 6 USB2.0 Ports and 4 SATA2 Ports

$42.85as of 11/04/2026 00:31 PST - Details

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Spec score8.2

Pros

+Six USB 2.0 ports

+Four SATA ports for storage drives

+Four RAM slots

+Gigabit Ethernet networking

+One M.2 slot and one PCIe x16 slot

Compared with the 9 motherboards on this page

+4 memory slots: only 1 of 21 here have more memory slots

+1 pcie x16 slots: only 2 of 20 here have more pcie x16 slots

+1G: only 4 of 29 here have a higher wired lan

+4 sata ports: only 2 of 14 here have more sata ports

−1 m.2 slots: 10 of the 19 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

About this product

AM4, mATX, DDR4, 2 Memory slots

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Gigabyte A520M S2H (AMD Ryzen AM4/MicroATX/4+3 Phases Digital PWM/Gigabyte Gaming GbE LAN/NVMe PCIe 3.0 x4 M.2/3

$79.99as of 11/03/2026 23:11 PST - Details

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Spec score8.0

Pros

+Uses AM4 socket for AMD Ryzen processors

+Includes NVMe PCIe 3.0 x4 M.2 slot

+Includes Gigabit LAN

+Supports DDR4 memory

Cons

−Only two RAM slots limit total memory expansion

Compared with the 9 motherboards on this page

+1G: only 4 of 29 here have a higher wired lan

−1 m.2 slots: 10 of the 19 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

About this product