Hardware Spec Index

Zephyra MB-3891 XT X870 ATX Wi-Fi 7 Motherboard

Motherboards · Zephyra · SKU MB3891-XT · Released 2024 · Updated 2026-10-22

Key facts

Benchmark index5,624 (Motherboards scale)
Category rank#8,463
Street price$579
Power51 W
Performance per dollar9.71
Released2024

Specifications

BrandZephyra
ModelZephyra MB-3891 XT
SocketAM5
ChipsetX870
Form factorATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-6400+ (OC)
Primary x16 slotPCIe 5.0 x16
M.2 slots3 total, 1× PCIe 5.0 x4
Rear USB-C2× USB4 40Gbps (Type-C)
Ethernet10GbE + 2.5GbE
WirelessWi-Fi 7 (802.11be, 320 MHz) + Bluetooth 5.4
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 XT X870 ATX Wi-Fi 7 Motherboard”, https://vextor7.com/item/4820447 (accessed 2026-10-22).