Hardware Spec Index

Halcyra MB-6391 Prime X870 ATX Wi-Fi 7 Motherboard

Motherboards · Halcyra · SKU MB6391-PRIME · Released 2024 · Updated 2026-10-21

Key facts

Benchmark index4,654 (Motherboards scale)
Category rank#13,142
Street price$399
Power42 W
Performance per dollar11.66
Released2024

Specifications

BrandHalcyra
ModelHalcyra MB-6391 Prime
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)
Ethernet5GbE
WirelessWi-Fi 7 (802.11be, 320 MHz) + Bluetooth 5.4
OverclockingCPU + memory
VRM20+2+1 phases, 90 A stages
BIOSDual UEFI, BIOS flashback button

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Cite this page: Hardware Spec Index, “Halcyra MB-6391 Prime X870 ATX Wi-Fi 7 Motherboard”, https://vextor7.com/item/6985969 (accessed 2026-10-21).