Hardware Spec Index

Zephyra MB-7991 Plus B550 E-ATX Wi-Fi 6 Motherboard

Motherboards · Zephyra · SKU MB7991-PLUS · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index2,873 (Motherboards scale)
Category rank#15,376
Street price$179
Power29 W
Performance per dollar16.05
Released2020

Specifications

BrandZephyra
ModelZephyra MB-7991 Plus
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 slots4 total
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessWi-Fi 6 (802.11ax) + Bluetooth 5.2
OverclockingCPU + memory
VRM15+1+1 phases, 60 A stages
BIOSUEFI

Related guides

PCIe Lanes ExplainedM.2 SSD Sizes and KeysAMD AM5 Chipsets ComparedIntel 800 Series ChipsetsAMD AM5 SocketIntel LGA1851 Socket

Similar Motherboards

ModelBenchmarkPriceCompare
Kyndral MB-6051 SE B650 ATX Wi-Fi 6E Motherboard3,525$269Compare
Zephyra MB-8414 Pro B650 Mini-ITX Wi-Fi 6E Motherboard2,783$169Compare
Zephyra MB-3642 Max X570 ATX Wi-Fi 6E Motherboard5,645$639Compare
Novexa MB-1926 Ti B650E ATX Wi-Fi 6E Motherboard4,471$379Compare
Zephyra MB-2655 Prime B760 ATX DDR4 Wi-Fi 6E Motherboard3,645$219Compare
Zephyra MB-3261 Pro X570 ATX Wi-Fi 6 Motherboard4,383$409Compare

All Motherboards · JSON

Cite this page: Hardware Spec Index, “Zephyra MB-7991 Plus B550 E-ATX Wi-Fi 6 Motherboard”, https://vextor7.com/item/7414913 (accessed 2026-10-25).