Hardware Spec Index

Zephyra MB-9991 Pro X570 E-ATX Wi-Fi 6 Motherboard

Motherboards · Zephyra · SKU MB9991-PRO · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index5,900 (Motherboards scale)
Category rank#20,290
Street price$689
Power53 W
Performance per dollar8.56
Released2019

Specifications

BrandZephyra
ModelZephyra MB-9991 Pro
SocketAM4
ChipsetX570
Form factorE-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)
Ethernet1GbE
WirelessWi-Fi 6 (802.11ax) + Bluetooth 5.2
OverclockingCPU + memory
VRM23+2+2 phases, 110 A stages
BIOSDual UEFI, BIOS flashback button

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Cite this page: Hardware Spec Index, “Zephyra MB-9991 Pro X570 E-ATX Wi-Fi 6 Motherboard”, https://vextor7.com/item/2376429 (accessed 2026-10-21).