Hardware Spec Index

Zephyra MB-4555 Prime B850 Mini-ITX Motherboard

Motherboards · Zephyra · SKU MB4555-PRIME · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index2,650 (Motherboards scale)
Category rank#1,308
Street price$139
Power26 W
Performance per dollar19.06
Released2025

Specifications

BrandZephyra
ModelZephyra MB-4555 Prime
SocketAM5
ChipsetB850
Form factorMini-ITX
Memory2× DDR5 DIMM, up to 128 GB
Max memory speedDDR5-8000+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots2 total, 1× PCIe 5.0 x4
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessNone
OverclockingCPU + memory
VRM14+1+1 phases, 50 A stages
BIOSUEFI

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Cite this page: Hardware Spec Index, “Zephyra MB-4555 Prime B850 Mini-ITX Motherboard”, https://vextor7.com/item/6174113 (accessed 2026-10-24).