Hardware Spec Index

Zephyra MB-4251 Prime B550 Micro-ATX Motherboard

Motherboards · Zephyra · SKU MB4251-PRIME · Released 2020 · Updated 2026-10-22

Key facts

Benchmark index1,873 (Motherboards scale)
Category rank#6,146
Street price$89
Power20 W
Performance per dollar21.04
Released2020

Specifications

BrandZephyra
ModelZephyra MB-4251 Prime
SocketAM4
ChipsetB550
Form factorMicro-ATX
Memory4× DDR4 DIMM, up to 128 GB
Max memory speedDDR4-4800+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots5 total
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessNone
OverclockingCPU + memory
VRM12+1+1 phases, 60 A stages
BIOSUEFI

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Cite this page: Hardware Spec Index, “Zephyra MB-4251 Prime B550 Micro-ATX Motherboard”, https://vextor7.com/item/456819 (accessed 2026-10-22).