Motherboards with 1 PCIe x16 Slot

AM4, mATX, DDR4, 4 Memory slots

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GIGABYTE B550M Gaming X WIFI6 AMD AM4 mATX Motherboard, Supports Ryzen 5000/4000/3000 Series, DDR4, 5+3 Power Phase, 2X

$126.00as of 11/04/2026 15:07 PST - Details

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Spec score8.4

Pros

+Micro-ATX size is compact for smaller cases

+Wi-Fi 6 built in for wireless networking

+Four RAM slots supporting DDR4 memory

+Two M.2 slots for fast storage

+One PCIe x16 slot for a graphics card

Compared with the 9 motherboards on this page

+1 pcie x16 slots: the most pcie x16 slots of the 74 here

+4 memory slots: only 7 of 51 here have more memory slots

+2 m.2 slots: only 5 of 30 here have more m.2 slots

−Wi-Fi 6: 25 of the 30 here have a higher wi-fi

−1G: 33 of the 54 here have a higher wired lan

How pros and cons are picked (About: Disclaimer)

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AM4, mATX, DDR4, 1 PCIe x16 slots

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ASUS Prime B550M-A WiFi II AMD Micro ATX DDR4 Motherboard with PCIe 4.0, WiFi 6, ECC Memory, HDMI 2.1, RGB Header

$99.00as of 11/04/2026 12:09 PST - Details

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Spec score8.5

Pros

+Compact microATX form factor

+DDR4 memory with ECC support

+PCIe 4.0 support

+Two M.2 slots for SSD storage

+Wi-Fi 6 built in

Cons

−Single PCIe x16 slot limits graphics card expansion

Compared with the 9 motherboards on this page

+1 pcie x16 slots: the most pcie x16 slots of the 74 here

+2 m.2 slots: only 5 of 30 here have more m.2 slots

−Wi-Fi 6: 25 of the 30 here have a higher wi-fi

−1G: 33 of the 54 here have a higher wired lan

How pros and cons are picked (About: Disclaimer)

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AM4, mATX, DDR4, 4 Memory slots

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MSI B550M Gaming Plus WIFI6E Motherboard, mATX-Supports AMD Ryzen 5000 Series,5000 G-Series 4000 G-Series,and 3000

$116.98as of 11/04/2026 00:18 PST - Details

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Spec score8.4

Pros

+Built-in Wi-Fi 6E for wireless networking

+Micro-ATX form factor fits smaller builds

+Four DDR4 slots for expanding memory

+AM4 socket supports Ryzen 5000 and 3000 series processors

Cons

−Uses older DDR4 memory rather than DDR5

−Only one PCIe x16 slot

Compared with the 9 motherboards on this page

+1 pcie x16 slots: the most pcie x16 slots of the 74 here

+4 memory slots: only 7 of 51 here have more memory slots

−1G: 33 of the 54 here have a higher wired lan

How pros and cons are picked (About: Disclaimer)

Other stores (1)

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About this product

AM4, ATX, DDR4, 4 Memory slots

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MSI MAG B550 Tomahawk WiFi Motherboard, ATX, AM4 | AMD Ryzen 5000 / 4000 / 3000 CPU, DDR4 up to 5100+MT/s OC, PCIe 4.0No current price. Check it at the store.View on Amazon

Spec score8.5

Pros

+AMD B550 chipset for Ryzen 3000 to 5000 processors

+AM4 socket for older Ryzen platforms

+Four RAM slots for memory expansion

+2.5G LAN for faster wired networking

+Wi-Fi 6E for wireless connectivity

Cons

−Uses DDR4 memory rather than DDR5

−Only one PCIe x16 slot

Compared with the 9 motherboards on this page

+1 pcie x16 slots: the most pcie x16 slots of the 74 here

+4 memory slots: only 7 of 51 here have more memory slots

How pros and cons are picked (About: Disclaimer)

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AM4, mATX, DDR4, 4 Memory slots

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GIGABYTE B550M DS3H AC R2 AMD AM4 mATX Motherboard, Supports Ryzen 5000/4000/3000 Series Processors, DDR4, 5+3 PowerNo current price. Check it at the store.View on Amazon

Spec score8.3

Pros

+Micro-ATX size is compact for smaller cases

+Wi-Fi 5 built in for wireless networking

+Four RAM slots supporting DDR4 memory

+Two M.2 slots for fast storage

+One PCIe x16 slot for a graphics card

Compared with the 9 motherboards on this page

+1 pcie x16 slots: the most pcie x16 slots of the 74 here

+4 memory slots: only 7 of 51 here have more memory slots

+2 m.2 slots: only 5 of 30 here have more m.2 slots

−Wi-Fi 5: 29 of the 30 here have a higher wi-fi

−1G: 33 of the 54 here have a higher wired lan

How pros and cons are picked (About: Disclaimer)

Other stores (1)

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About this product

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 11/04/2026 12:09 PST - Details

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Spec score8.4

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: the most pcie x16 slots of the 74 here

−1 m.2 slots: 17 of the 30 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

About this product

AM4, ATX, DDR4, 4 Memory slots

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ASRock B550 Rock WiFi ATX Motherboard, AM4 Socket for Ryzen 3000-5000 CPUs, DDR4 4733+ (OC), PCIe 4.0, Triple M.2, 2.5G

$109.99as of 11/04/2026 12:09 PST - Details

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Spec score8.4

Pros

+Three M.2 slots for solid-state storage

+Built-in Wi-Fi 6E for wireless connectivity

+2.5G LAN port for faster wired networking

+Supports up to 128GB of memory

+Standard ATX form factor offers room for expansion cards

Cons

−Uses DDR4 memory, an older memory type than DDR5

−Only one PCIe x16 slot limits expansion options

Compared with the 9 motherboards on this page

+1 pcie x16 slots: the most pcie x16 slots of the 74 here

+3 m.2 slots: only 2 of 30 here have more m.2 slots

+4 memory slots: only 7 of 51 here have more memory slots

−128GB maximum memory: 8 of the 14 here have a higher maximum memory

How pros and cons are picked (About: Disclaimer)

About this product

AM4, ATX, DDR4, 4 Memory slots

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MSI B550 Gaming WIFI6E Motherboard, ATX - Supports AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series and 3000 Series

$119.99as of 11/04/2026 00:18 PST - Details

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Spec score8.4

Pros

+Full ATX form factor with room for expansion

+Built-in Wi-Fi 6E for wireless networking

+Four DDR4 slots for expanding memory

+AM4 socket supports Ryzen 5000 and 3000 series processors

Cons

−Uses older DDR4 memory rather than DDR5

−Only one PCIe x16 slot

Compared with the 9 motherboards on this page

+1 pcie x16 slots: the most pcie x16 slots of the 74 here

+4 memory slots: only 7 of 51 here have more memory slots

−1G: 33 of the 54 here have a higher wired lan

How pros and cons are picked (About: Disclaimer)

About this product

AM4, mATX, DDR4, 4 Memory slots

Product details×

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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 score8.0

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

+1 pcie x16 slots: the most pcie x16 slots of the 74 here

+4 memory slots: only 7 of 51 here have more memory slots

−1G: 33 of the 54 here have a higher wired lan

−1 m.2 slots: 17 of the 30 here have more m.2 slots

How pros and cons are picked (About: Disclaimer)

About this product