Hardware Spec Index

Novexa MB-8643 Prime B850 ATX Motherboard

Motherboards · Novexa · SKU MB8643-PRIME · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index2,552 (Motherboards scale)
Category rank#42,831
Street price$119
Power26 W
Performance per dollar21.45
Released2025

Specifications

BrandNovexa
ModelNovexa MB-8643 Prime
SocketAM5
ChipsetB850
Form factorATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-8000+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots4 total, 1× PCIe 5.0 x4
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessNone
OverclockingCPU + memory
VRM14+1+1 phases, 70 A stages
BIOSUEFI

Related guides

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Cite this page: Hardware Spec Index, “Novexa MB-8643 Prime B850 ATX Motherboard”, https://vextor7.com/item/4389995 (accessed 2026-10-20).