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Motherboards under $300

All motherboards

5 motherboards under $300 from ASUS, GIGABYTE, MSI and more. Most cost $217 to $284, and half cost less than $237.

Top brands: ASUSSupermicroGIGABYTEMSIASRockTytmsca

All filtersFilters (1)×
Chipset: AMD B450  ×Clear all
SocketAM45
Form factormATX4
Memory typeDDR44
Memory slots2141
ChipsetAMD B8506Intel X996AMD B4505AMD X8704AMD B5503Intel C6123AMD X870E2Intel Z8902
Show all 21AMD A3201AMD B6501Intel B2501Intel B3651Intel B4601Intel B6601Intel H1101Intel H1701Intel H6101Intel Q871Intel Z1701Intel Z6901Intel Z7901
PriceUnder $2503$250 & above2
Clear allShow 5 motherboards
Chipset: AMD B450  ×5 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
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 11/04/2026 15:07 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
Jwzfccore

AM4, DDR4, AMD B450

+AM4 socket for Ryzen processors
+Dual-channel DDR4 memory support
+M.2 NVMe slot for fast storage
$216.82
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

Compare specs

motherboardSocketForm factorMemory typeChipsetSpec scorePrice
AM4mATXDDR4AMD B450n/a$284.60
as of 11/04/2026 15:07 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
AM4DDR4AMD B450n/a$216.82
as of 11/04/2026 00:16 PST - Details
AM4mATXDDR4AMD B450n/a$237.46
as of 11/04/2026 00:16 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

Related product types

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