AM4, mATX, DDR4, 4 Memory slots
Motherboards under $150
17 motherboards under $150 from ASRock, MSI, ASUS and more. Most cost $90 to $126, and half cost less than $110.
Spec score 8.3
+Micro-ATX size is compact for smaller cases
+Four RAM slots supporting DDR4 memory
+Two M.2 slots for fast storage
−No built-in Wi-Fi
$74.99-25%List: $99.99
as of 11/03/2026 23:11 PST - DetailsProduct details
GIGABYTE B550M K AMD AM4 Micro-ATX Motherboard, Supports Ryzen 5000/4000/3000 Series Processors, DDR4, 3+3 Power Phase,
$74.99as of 11/03/2026 23:11 PST - Details
View on AmazonSpec score8.3
Pros
+Micro-ATX size is compact for smaller cases
+Four RAM slots supporting DDR4 memory
+Two M.2 slots for fast storage
Cons−No built-in Wi-Fi
Compared with the 17 motherboards on this page+2 m.2 slots: only 3 of 44 here have more m.2 slots
+4 memory slots: only 3 of 41 here have more memory slots
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About this product
Spec score 9.1
AM4, ATX, DDR4, 2 M.2 slots
+PCIe 4.0 support for fast expansion
+Two M.2 slots for storage
+Wi-Fi 6 for wireless connectivity
$115.99-23%List: $149.99
as of 11/04/2026 12:10 PST - DetailsProduct details
ASUS TUF Gaming B550-PLUS WiFi II AMD AM4 (3rd Gen Ryzen™) ATX DDR4 Gaming Motherboard (PCIe 4.0, WiFi 6, 2.5Gb LAN,
$115.99as of 11/04/2026 12:10 PST - Details
View on AmazonSpec score9.1
Pros
+PCIe 4.0 support for fast expansion
+Two M.2 slots for storage
+Wi-Fi 6 for wireless connectivity
+2.5Gb LAN for faster wired networking
+AM4 socket supports 3rd Gen Ryzen processors
Compared with the 17 motherboards on this page+2.5G: the highest wired lan of the 61 here
+2 m.2 slots: only 3 of 44 here have more m.2 slots
−Wi-Fi 6: 24 of the 34 here have a higher wi-fi
How pros and cons are picked (About: Disclaimer)About this product
Spec score 8.5
AM4, mATX, DDR4, 1 PCIe x16 slots
+Compact microATX form factor
+DDR4 memory with ECC support
+PCIe 4.0 support
−Single PCIe x16 slot limits graphics card expansion
$99.00-17%List: $119.99
as of 11/04/2026 12:09 PST - DetailsProduct details
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
View on AmazonSpec 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 17 motherboards on this page+2 m.2 slots: only 3 of 44 here have more m.2 slots
+1 pcie x16 slots: only 6 of 37 here have more pcie x16 slots
−Wi-Fi 6: 24 of the 34 here have a higher wi-fi
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About this product
AM4, mATX, DDR4, Wi-Fi 6E
+Compact mATX form factor
+Wi-Fi 6E wireless built in
+AM4 socket supports AMD Ryzen 5000 series processors
−Uses DDR4 memory rather than newer DDR5
$109.99-8%List: $119.99
as of 11/04/2026 00:18 PST - DetailsProduct details
MSI PRO B550M-VC WiFi ProSeries Motherboard (AMD Ryzen 5000 Series, AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen
$109.99as of 11/04/2026 00:18 PST - Details
View on AmazonPros
+Compact mATX form factor
+Wi-Fi 6E wireless built in
+AM4 socket supports AMD Ryzen 5000 series processors
+DDR4 memory support
Cons−Uses DDR4 memory rather than newer DDR5
Compared with the 17 motherboards on this page+Wi-Fi 6E: only 1 of 34 here have a higher wi-fi
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About this product
Spec score 8.5
AM4, ATX, DDR4, 4 Memory slots
+ATX form factor with room for full-size expansion cards
+Wi-Fi 6 built in for wireless networking
+Four RAM slots supporting DDR4 memory
$109.99-8%List: $119.99
as of 11/03/2026 23:11 PST - DetailsProduct details
GIGABYTE B550 Eagle WIFI6 AMD AM4 ATX Motherboard, Supports Ryzen 5000/4000/3000 Processors, DDR4, 10+3 Power Phase, 2X
$109.99as of 11/03/2026 23:11 PST - Details
View on AmazonSpec score8.5
Pros
+ATX form factor with room for full-size expansion cards
+Wi-Fi 6 built in for wireless networking
+Four RAM slots supporting DDR4 memory
+Two M.2 slots for fast storage
Compared with the 17 motherboards on this page+2 m.2 slots: only 3 of 44 here have more m.2 slots
+4 memory slots: only 3 of 41 here have more memory slots
−Wi-Fi 6: 24 of the 34 here have a higher wi-fi
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About this product
Spec score 7.9
AM4, mATX, DDR4, 2 Memory slots
+Micro-ATX form factor fits compact builds
+Supports AMD Ryzen 3000, 4000 and 5000 processors
+Supports DDR4 memory with overclocking up to 4733 MHz
−Only two RAM slots limit total memory capacity
$69.99
as of 11/04/2026 12:09 PST - DetailsProduct details
ASRock B550M-HDV Socket AM4 Micro-ATX Motherboard, Supports AMD Ryzen 5000/4000/3000 Series Processors, DDR4 4733+(OC),
$69.99as of 11/04/2026 12:09 PST - Details
View on AmazonSpec score7.9
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 17 motherboards on this page+4 sata ports: only 4 of 20 here have more sata ports
−1 m.2 slots: 32 of the 44 here have more m.2 slots
−2 memory slots: 28 of the 41 here have more memory slots
How pros and cons are picked (About: Disclaimer)About this product
AM4, mATX, DDR4, 128GB
+Supports up to 128GB of memory
+PCIe 4.0 support for newer graphics cards and storage
+Micro-ATX form factor fits smaller builds
−Uses older DDR4 memory rather than DDR5
$89.99
as of 11/04/2026 00:18 PST - DetailsProduct details
MSI B550M PRO-VDH WiFi ProSeries Motherboard (AMD Ryzen 5000, AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 1,
$89.99as of 11/04/2026 00:18 PST - Details
View on AmazonPros
+Supports up to 128GB of memory
+PCIe 4.0 support for newer graphics cards and storage
+Micro-ATX form factor fits smaller builds
+AM4 socket supports Ryzen 5000 series processors
Cons−Uses older DDR4 memory rather than DDR5
Compared with the 17 motherboards on this page+128GB maximum memory: only 2 of 10 here have a higher maximum memory
How pros and cons are picked (About: Disclaimer)Other stores (1)
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About this product
Spec score 8.5
AM4, mATX, DDR4, 4 Memory slots
+Micro-ATX size is compact for smaller cases
+Wi-Fi 6 built in for wireless networking
+Four RAM slots supporting DDR4 memory
$126.00-19%List: $154.99
as of 11/03/2026 23:11 PST - DetailsProduct details
GIGABYTE B550M Gaming X WIFI6 AMD AM4 mATX Motherboard, Supports Ryzen 5000/4000/3000 Series, DDR4, 5+3 Power Phase, 2X
$126.00as of 11/03/2026 23:11 PST - Details
View on AmazonSpec score8.5
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 17 motherboards on this page+2 m.2 slots: only 3 of 44 here have more m.2 slots
+4 memory slots: only 3 of 41 here have more memory slots
+1 pcie x16 slots: only 6 of 37 here have more pcie x16 slots
−Wi-Fi 6: 24 of the 34 here have a higher wi-fi
How pros and cons are picked (About: Disclaimer)Other stores (1)
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About this product
Spec score 8.6
AM4, mATX, DDR4, 4 Memory slots
+Micro-ATX size is compact for smaller cases
+Wi-Fi 6E built in for wireless networking
+Four RAM slots supporting DDR4 memory
$138.99-7%List: $149.99
as of 11/03/2026 23:11 PST - DetailsProduct details
GIGABYTE B550M AORUS Elite AX (rev 1.3) AMD AM4 mATX Motherboard, Supports Ryzen 5000/4000/3000 Processors, DDR4, 5+3
$138.99as of 11/03/2026 23:11 PST - Details
View on AmazonSpec score8.6
Pros
+Micro-ATX size is compact for smaller cases
+Wi-Fi 6E built in for wireless networking
+Four RAM slots supporting DDR4 memory
+Two M.2 slots for fast storage
Compared with the 17 motherboards on this page+Wi-Fi 6E: only 1 of 34 here have a higher wi-fi
+2 m.2 slots: only 3 of 44 here have more m.2 slots
+4 memory slots: only 3 of 41 here have more memory slots
How pros and cons are picked (About: Disclaimer)Other stores (1)
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About this product
Spec score 8.5
AM4, mATX, DDR4, 4 Memory slots
+Built-in Wi-Fi 6E for wireless networking
+Micro-ATX form factor fits smaller builds
+Four DDR4 slots for expanding memory
−Uses older DDR4 memory rather than DDR5
−Only one PCIe x16 slot
$116.98
as of 11/04/2026 00:18 PST - DetailsProduct details
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
View on AmazonSpec score8.5
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 17 motherboards on this page+Wi-Fi 6E: only 1 of 34 here have a higher wi-fi
+4 memory slots: only 3 of 41 here have more memory slots
+1 pcie x16 slots: only 6 of 37 here have more pcie x16 slots
How pros and cons are picked (About: Disclaimer)Other stores (1)
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About this product
AM4, mATX, DDR4, Wi-Fi 6E
+Compact mATX form factor
+Wi-Fi 6E wireless built in
+AM4 socket supports AMD Ryzen 5000 series processors
−Uses DDR4 memory rather than newer DDR5
$118.95
as of 11/04/2026 00:18 PST - DetailsProduct details
MSI PRO B550M-P WIFI6E ProSeries Motherboard (AMD Ryzen 5000 Series, AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen
$118.95as of 11/04/2026 00:18 PST - Details
View on AmazonPros
+Compact mATX form factor
+Wi-Fi 6E wireless built in
+AM4 socket supports AMD Ryzen 5000 series processors
+DDR4 memory support
Cons−Uses DDR4 memory rather than newer DDR5
Compared with the 17 motherboards on this page+Wi-Fi 6E: only 1 of 34 here have a higher wi-fi
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About this product
AM4, DDR4, AMD B550
+Supports 3rd Gen AMD Ryzen and future AMD Ryzen processors
+Uses AM4 socket for a wide range of Ryzen chips
+AMD B550 chipset for AM4 platform builds
$89.99
as of 11/04/2026 12:09 PST - DetailsProduct details
ASRock B550M Pro4 Micro ATX Motherboard, AMD AM4 Ryzen 3000-5000, DDR4 4733+ (OC), PCIe 4.0, Dual M.2, HDMI/DP/VGA
$89.99as of 11/04/2026 12:09 PST - Details
View on AmazonPros
+Supports 3rd Gen AMD Ryzen and future AMD Ryzen processors
+Uses AM4 socket for a wide range of Ryzen chips
+AMD B550 chipset for AM4 platform builds
+Uses DDR4 memory
How pros and cons are picked (About: Disclaimer)Other stores (1)
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About this product
Spec score 8.0
AM4, ATX, DDR4, 1 PCIe x16 slots
+Standard ATX form factor offers room for expansion cards
+Four SATA ports for connecting multiple drives
+Built on the AMD B550 chipset
−Only one M.2 slot for solid-state storage
−Only one PCIe x16 slot limits expansion options
$89.99
as of 11/04/2026 12:09 PST - DetailsProduct details
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
View on AmazonSpec score8.0
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 17 motherboards on this page+1 pcie x16 slots: only 6 of 37 here have more pcie x16 slots
+4 sata ports: only 4 of 20 here have more sata ports
−1 m.2 slots: 32 of the 44 here have more m.2 slots
How pros and cons are picked (About: Disclaimer)About this product
Spec score 8.9
AM4, ATX, DDR4, 4 Memory slots
+Three M.2 slots for solid-state storage
+Built-in Wi-Fi 6E for wireless connectivity
+2.5G LAN port for faster wired networking
−Uses DDR4 memory, an older memory type than DDR5
−Only one PCIe x16 slot limits expansion options
$109.99
as of 11/04/2026 12:09 PST - DetailsProduct details
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
View on AmazonSpec score8.9
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 17 motherboards on this page+2.5G: the highest wired lan of the 61 here
+3 m.2 slots: the most m.2 slots of the 44 here
+Wi-Fi 6E: only 1 of 34 here have a higher wi-fi
+4 memory slots: only 3 of 41 here have more memory slots
How pros and cons are picked (About: Disclaimer)About this product
Spec score 8.5
AM4, ATX, DDR4, 2 M.2 slots
+Supports AMD AM4 with 3rd Gen Ryzen processors
+DDR4 memory support
+PCIe 4.0 support
−Older AM4 platform
$128.99
as of 11/04/2026 12:09 PST - DetailsProduct details
ASUS Prime B550-PLUS AC-HES AMD AM4 (3rd Gen Ryzen) ATX DDR4 Motherboard (Dual M.2, PCIe4.0, WIFI5, 1Gb Ethernet, SATA
$128.99as of 11/04/2026 12:09 PST - Details
View on AmazonSpec score8.5
Pros
+Supports AMD AM4 with 3rd Gen Ryzen processors
+DDR4 memory support
+PCIe 4.0 support
+Two M.2 slots for SSD storage
+Wi-Fi 5 built in
Cons−Older AM4 platform
Compared with the 17 motherboards on this page+2 m.2 slots: only 3 of 44 here have more m.2 slots
−Wi-Fi 5: 32 of the 34 here have a higher wi-fi
How pros and cons are picked (About: Disclaimer)About this product
Spec score 8.5
AM4, ATX, DDR4, 4 Memory slots
+Full ATX form factor with room for expansion
+Built-in Wi-Fi 6E for wireless networking
+Four DDR4 slots for expanding memory
−Uses older DDR4 memory rather than DDR5
−Only one PCIe x16 slot
$119.99
as of 11/04/2026 00:18 PST - DetailsProduct details
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
View on AmazonSpec score8.5
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 17 motherboards on this page+Wi-Fi 6E: only 1 of 34 here have a higher wi-fi
+4 memory slots: only 3 of 41 here have more memory slots
+1 pcie x16 slots: only 6 of 37 here have more pcie x16 slots
How pros and cons are picked (About: Disclaimer)About this product
Spec score 8.1
AM4, mATX, DDR4, 4 Memory slots
+Compact mATX form factor
+Four RAM slots for DDR4 memory
+AM4 socket supports AMD Ryzen 5000 and older series processors
−Only 1G LAN for wired networking
−Uses DDR4 memory rather than newer DDR5
$89.99
as of 11/04/2026 00:18 PST - DetailsProduct details
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
View on AmazonSpec score8.1
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 17 motherboards on this page+4 memory slots: only 3 of 41 here have more memory slots
+1 pcie x16 slots: only 6 of 37 here have more pcie x16 slots
−1 m.2 slots: 32 of the 44 here have more m.2 slots
How pros and cons are picked (About: Disclaimer)About this product
Compare specs
| motherboard | Socket | Form factor | Memory type | Wired LAN | Chipset | Spec score | Price |
|---|---|---|---|---|---|---|---|
| AM4 | mATX | DDR4 | 1G | AMD B550 | 8.3 | $74.99 as of 11/03/2026 23:11 PST - Details | |
| AM4 | ATX | DDR4 | 2.5G | AMD B550 | 9.1 | $115.99 as of 11/04/2026 12:10 PST - Details | |
| AM4 | mATX | DDR4 | 1G | AMD B550 | 8.5 | $99.00 as of 11/04/2026 12:09 PST - Details | |
| AM4 | mATX | DDR4 | AMD B550 | n/a | $109.99 as of 11/04/2026 00:18 PST - Details | ||
| AM4 | ATX | DDR4 | 1G | AMD B550 | 8.5 | $109.99 as of 11/03/2026 23:11 PST - Details | |
| AM4 | mATX | DDR4 | 1G | AMD B550 | 7.9 | $69.99 as of 11/04/2026 12:09 PST - Details | |
| AM4 | mATX | DDR4 | AMD B550 | n/a | $89.99 as of 11/04/2026 00:18 PST - Details | ||
| AM4 | mATX | DDR4 | 1G | AMD B550 | 8.5 | $126.00 as of 11/03/2026 23:11 PST - Details | |
| AM4 | mATX | DDR4 | 1G | AMD B550 | 8.6 | $138.99 as of 11/03/2026 23:11 PST - Details | |
| AM4 | mATX | DDR4 | 1G | AMD B550 | 8.5 | $116.98 as of 11/04/2026 00:18 PST - Details |















