Hardware Spec Index

Zephyra MB-9966 Prime B860 E-ATX Motherboard

Motherboards · Zephyra · SKU MB9966-PRIME · Released 2026 · Updated 2026-10-21

Key facts

Benchmark index2,573 (Motherboards scale)
Category rank#7,297
Street price$149
Power26 W
Performance per dollar17.27
Released2026

Specifications

BrandZephyra
ModelZephyra MB-9966 Prime
SocketLGA1851
ChipsetB860
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-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessNone
OverclockingMemory only
VRM14+1+1 phases, 50 A stages
BIOSUEFI

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-9966 Prime B860 E-ATX Motherboard”, https://vextor7.com/item/3510885 (accessed 2026-10-21).