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Motherboards under $400

All motherboards

5 motherboards under $400 from ASUS, Supermicro, GIGABYTE and more. Most cost $300 to $382, and half cost less than $351.

All filtersFilters (1)×
Form factor: mATX  ×Clear all
BrandASUS1MSI1Oaknode1Supermicro1
SocketAM52AM41LGA11511LGA17001
Form factorATX16mATX5ITX3
Memory typeDDR53DDR41
Memory slots42
M.2 slots2141
Wired LAN2.5G15G1
Wi-FiWi-Fi 72
ChipsetAMD B8502AMD A5201Intel Q6701
Clear allShow 5 motherboards
Form factor: mATX  ×5 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
ASUSSpec score 9.0

AM5, mATX, DDR5, 4 M.2 slots

+Compact mATX form factor for smaller builds
+AMD B850 chipset for AM5 Ryzen processors
+Four M.2 slots for multiple storage drives
−Fewer expansion options than full ATX boards
$350.77
as of 11/04/2026 12:10 PST - Details
OaknodeSpec score 7.9

LGA1700, mATX, DDR5, 4 Memory slots

+12 SATA ports for building a large storage array
+Two M.2 NVMe slots for fast cache or boot drives
+Supports up to 128GB of DDR5 memory across four slots
−Micro-ATX form factor limits expansion slot count
$300.00
as of 11/04/2026 00:47 PST - Details
Generic

AM4, mATX, DDR4, AMD A520

+AMD A520 chipset for AM4 processors
+Micro ATX form factor fits compact builds
+DDR4 memory support for AM4 platforms
−A520 chipset does not support CPU overclocking
$344.76
as of 11/04/2026 00:16 PST - Details
Supermicro

LGA1151, mATX, 4 Memory slots, 64GB

+Compact micro-ATX form factor
+Supports up to 64 GB of RAM
+LGA1151 socket for Intel processors
−Only four RAM slots
$382.85
as of 11/04/2026 07:10 PST - Details
MSISpec score 8.9

AM5, mATX, DDR5, 5G

+Wi-Fi 7: the highest wi-fi of the 14 here
+5G: only 1 of 15 here have a higher wired lan
$361.26
as of 11/04/2026 00:18 PST - Details

Compare specs

motherboardSocketForm factorMemory typeChipsetSpec scorePrice
AM5mATXDDR5AMD B8509.0$350.77
as of 11/04/2026 12:10 PST - Details
LGA1700mATXDDR5Intel Q6707.9$300.00
as of 11/04/2026 00:47 PST - Details
AM4mATXDDR4AMD A520n/a$344.76
as of 11/04/2026 00:16 PST - Details
LGA1151mATXn/a$382.85
as of 11/04/2026 07:10 PST - Details
AM5mATXDDR5AMD B8508.9$361.26
as of 11/04/2026 00:18 PST - Details

Before you buy

Other price ranges

PC Cases264CPU Coolers393Processors247Data Center GPUs82Graphics Cards371Power Supplies237Memory374Storage Drives577Binoculars228Network Cables1,382Cameras2,556Chromebooks196

Popular filters

DDR4 Motherboards199DDR5 Motherboards190ATX Motherboards165mATX Motherboards152Motherboards under $200112Motherboards under $150109AM5 Motherboards99Motherboards with 4 Memory Slots96

Motherboards by use

Gaming Motherboards81LGA1700 DDR5 Motherboards47Budget Motherboards58Workstation Motherboards60

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