Hardware Spec Index

Zephyra MB-9891 Ultra Z890 E-ATX Wi-Fi 7 Motherboard

Motherboards · Zephyra · SKU MB9891-ULTRA · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index5,032 (Motherboards scale)
Category rank#31,311
Street price$509
Power48 W
Performance per dollar9.89
Released2025

Specifications

BrandZephyra
ModelZephyra MB-9891 Ultra
SocketLGA1851
ChipsetZ890
Form factorE-ATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-9000+ (OC, CUDIMM)
Primary x16 slotPCIe 5.0 x16
M.2 slots5 total, 1× PCIe 5.0 x4
Rear USB-C2× Thunderbolt 5 (80Gbps, Type-C)
Ethernet5GbE
WirelessWi-Fi 7 (802.11be, 320 MHz) + Bluetooth 5.4
OverclockingCPU + memory
VRM22+2+2 phases, 90 A stages
BIOSDual UEFI, BIOS flashback button

Related guides

PCIe Lanes ExplainedM.2 SSD Sizes and KeysIntel LGA1851 SocketIntel 800 Series ChipsetsDDR5 Memory ExplainedPCIe 5.0 Explained

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Cite this page: Hardware Spec Index, “Zephyra MB-9891 Ultra Z890 E-ATX Wi-Fi 7 Motherboard”, https://vextor7.com/item/37521794 (accessed 2026-10-24).