Hardware Spec Index

Zephyra MB-9975 Max B550 E-ATX Motherboard

Motherboards · Zephyra · SKU MB9975-MAX · Released 2020 · Updated 2026-10-18

Key facts

Benchmark index2,479 (Motherboards scale)
Category rank#40,990
Street price$139
Power25 W
Performance per dollar17.83
Released2020

Specifications

BrandZephyra
ModelZephyra MB-9975 Max
SocketAM4
ChipsetB550
Form factorE-ATX
Memory4× DDR4 DIMM, up to 128 GB
Max memory speedDDR4-4800+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots3 total
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessNone
OverclockingCPU + memory
VRM13+1+1 phases, 70 A stages
BIOSUEFI

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Cite this page: Hardware Spec Index, “Zephyra MB-9975 Max B550 E-ATX Motherboard”, https://vextor7.com/item/2295489 (accessed 2026-10-18).