Hardware Spec Index

Zephyra MB-8640 Prime B650E E-ATX Wi-Fi 7 Motherboard

Motherboards · Zephyra · SKU MB8640-PRIME · Released 2024 · Updated 2026-10-26

Key facts

Benchmark index4,751 (Motherboards scale)
Category rank#25,740
Street price$389
Power44 W
Performance per dollar12.21
Released2024

Specifications

BrandZephyra
ModelZephyra MB-8640 Prime
SocketAM5
ChipsetB650E
Form factorE-ATX
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-C1× USB 3.2 Gen 2x2 20Gbps (Type-C)
Ethernet5GbE
WirelessWi-Fi 7 (802.11be, 320 MHz) + Bluetooth 5.4
OverclockingCPU + memory
VRM20+2+2 phases, 110 A stages
BIOSDual UEFI, BIOS flashback button

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Cite this page: Hardware Spec Index, “Zephyra MB-8640 Prime B650E E-ATX Wi-Fi 7 Motherboard”, https://vextor7.com/item/9865712 (accessed 2026-10-26).