Hardware Spec Index

Zephyra MB-3891 Prime X570 E-ATX Wi-Fi 6E Motherboard

Motherboards · Zephyra · SKU MB3891-PRIME · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index5,889 (Motherboards scale)
Category rank#28,508
Street price$639
Power53 W
Performance per dollar9.22
Released2021

Specifications

BrandZephyra
ModelZephyra MB-3891 Prime
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 slots2 total
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet10GbE + 2.5GbE
WirelessWi-Fi 6E (802.11ax, 6 GHz) + Bluetooth 5.3
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-3891 Prime X570 E-ATX Wi-Fi 6E Motherboard”, https://vextor7.com/item/1993339 (accessed 2026-10-22).