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Motherboards under $400

All motherboards

2 motherboards under $400 from ASUS, Supermicro, GIGABYTE and more. Prices run $390 to $398.

Supermicro

LGA2011, ATX, DDR4, 1 PCIe x16 slots

+Extended ATX form factor for larger server builds
+LGA2011 socket with DDR4 memory support
+Built-in 1G LAN for network connectivity
−Only one PCIe x16 slot limits expansion options
$390.00
as of 11/04/2026 07:10 PST - Details
SupermicroSpec score 8.4

LGA2011, 8 Memory slots, 256GB, 1G

+Supports ECC memory
+Eight RAM slots for large memory capacity
+Supports up to 256 GB of RAM
$398.95
as of 11/04/2026 07:10 PST - Details

Compare specs

motherboardSocketForm factorMemory typeChipsetSpec scorePrice
LGA2011ATXDDR4n/a$390.00
as of 11/04/2026 07:10 PST - Details
LGA20118.4$398.95
as of 11/04/2026 07:10 PST - Details

Before you buy

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.