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Motherboards under $300

All motherboards

10 motherboards under $300 from ASUS, GIGABYTE, MSI and more. Most cost $222 to $284, and half cost less than $249.

ASUSSpec score 8.7

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
$259.99
as of 11/04/2026 12:10 PST - Details
Generic

AM4, mATX, DDR4, AMD B450

+Micro-ATX form factor fits smaller cases
+AM4 socket for Ryzen processors
+Built for DDR4 memory modules
−Micro-ATX layout offers fewer expansion slots than ATX
$284.60
as of 11/03/2026 23:07 PST - Details
Tytmsca

LGA1151, mATX, DDR4, Intel Z170

+Micro-ATX form factor suits compact builds
+Uses DDR4 memory, a common and widely available type
+Intel Z170 chipset supports overclocking on compatible processors
−LGA 1151 is an older Intel socket
−Intel Z170 is an older chipset platform
$221.74
as of 11/03/2026 23:07 PST - Details
Bjnskdgagb

LGA1200, mATX, DDR4, 1 M.2 slots

+Intel B460 chipset with LGA1200 socket
+One M.2 slot for fast SSD storage
+DDR4 memory support up to 64GB
−Only one M.2 slot limits fast storage expansion
$221.28
as of 11/04/2026 00:16 PST - Details
Generic

AM4, mATX, 2 Memory slots, AMD B450

+AMD B450 chipset with AM4 socket
+Micro-ATX form factor
+Two RAM slots listed
−Only two RAM slots limit total memory expansion
$231.26
as of 11/04/2026 00:16 PST - Details
Generic

AM4, mATX, DDR4, 4 Memory slots

+Four DDR4 slots for expanding memory
+Micro-ATX form factor fits smaller builds
+Includes HDMI output for display connection
−Uses older DDR4 memory rather than DDR5
$268.12
as of 11/04/2026 00:16 PST - Details
Bjnskdgagb

AM4, mATX, DDR4, AMD B550

+AMD B550 chipset for AM4 Ryzen processors
+Micro-ATX form factor fits many standard cases
+Supports up to 128GB of DDR4 memory
$288.32
as of 11/04/2026 00:16 PST - Details
Jwzfccore

LGA1151, mATX, DDR4, Intel B365

+Micro-ATX form factor fits smaller cases
+Supports DDR4 memory
+LGA1151 socket for Intel processors
$231.60
as of 11/04/2026 00:16 PST - Details
Generic

AM4, mATX, DDR4, AMD B450

+AMD B450 chipset for AM4 Ryzen processors
+Micro-ATX form factor fits many standard cases
+Supports up to 128GB of DDR4 memory
$237.46
as of 11/04/2026 00:16 PST - Details
Generic

AM4, mATX, 4 Memory slots, AMD B550

+AM4 socket supports a wide range of Ryzen processors
+Micro ATX form factor fits compact builds
+Four DDR4 slots allow larger memory configurations
$264.86
as of 11/04/2026 00:40 PST - Details

Compare specs

motherboardSocketForm factorMemory typeChipsetSpec scorePrice
AM5mATXDDR5AMD B8508.7$259.99
as of 11/04/2026 12:10 PST - Details
AM4mATXDDR4AMD B450n/a$284.60
as of 11/03/2026 23:07 PST - Details
LGA1151mATXDDR4Intel Z170n/a$221.74
as of 11/03/2026 23:07 PST - Details
LGA1200mATXDDR4Intel B460n/a$221.28
as of 11/04/2026 00:16 PST - Details
AM4mATXAMD B450n/a$231.26
as of 11/04/2026 00:16 PST - Details
AM4mATXDDR4AMD B450n/a$268.12
as of 11/04/2026 00:16 PST - Details
AM4mATXDDR4AMD B550n/a$288.32
as of 11/04/2026 00:16 PST - Details
LGA1151mATXDDR4Intel B365n/a$231.60
as of 11/04/2026 00:16 PST - Details
AM4mATXDDR4AMD B450n/a$237.46
as of 11/04/2026 00:16 PST - Details
AM4mATXAMD B550n/a$264.86
as of 11/04/2026 00:40 PST - Details

Before you buy

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