Hardware Spec Index

Kyndral MB-4389 Ultra B850 E-ATX Wi-Fi 6E Motherboard

Motherboards · Kyndral · SKU MB4389-ULTRA · Released 2026 · Updated 2026-10-20

Key facts

Benchmark index2,870 (Motherboards scale)
Category rank#45,300
Street price$159
Power27 W
Performance per dollar18.05
Released2026

Specifications

BrandKyndral
ModelKyndral MB-4389 Ultra
SocketAM5
ChipsetB850
Form factorE-ATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-8000+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots3 total, 1× PCIe 5.0 x4
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessWi-Fi 6E (802.11ax, 6 GHz) + Bluetooth 5.3
OverclockingCPU + memory
VRM14+1+1 phases, 70 A stages
BIOSUEFI

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Cite this page: Hardware Spec Index, “Kyndral MB-4389 Ultra B850 E-ATX Wi-Fi 6E Motherboard”, https://vextor7.com/item/2895641 (accessed 2026-10-20).