Hardware Spec Index

Halcyra MB-3991 Plus H810 E-ATX Motherboard

Motherboards · Halcyra · SKU MB3991-PLUS · Released 2026 · Updated 2026-10-26

Key facts

Benchmark index2,341 (Motherboards scale)
Category rank#5,997
Street price$119
Power22 W
Performance per dollar19.67
Released2026

Specifications

BrandHalcyra
ModelHalcyra MB-3991 Plus
SocketLGA1851
ChipsetH810
Form factorE-ATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-9000+ (OC, CUDIMM)
Primary x16 slotPCIe 4.0 x16
M.2 slots5 total
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessNone
OverclockingNone
VRM13+1+1 phases, 50 A stages
BIOSUEFI

Related guides

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Cite this page: Hardware Spec Index, “Halcyra MB-3991 Plus H810 E-ATX Motherboard”, https://vextor7.com/item/97714517 (accessed 2026-10-26).