Hardware Spec Index

Zephyra MB-6643 Prime X870E E-ATX Wi-Fi 7 Motherboard

Motherboards · Zephyra · SKU MB6643-PRIME · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index5,756 (Motherboards scale)
Category rank#30,236
Street price$689
Power53 W
Performance per dollar8.35
Released2025

Specifications

BrandZephyra
ModelZephyra MB-6643 Prime
SocketAM5
ChipsetX870E
Form factorE-ATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-8000+ (OC)
Primary x16 slotPCIe 5.0 x16
M.2 slots5 total, 2× PCIe 5.0 x4
Rear USB-C2× USB4 40Gbps (Type-C)
Ethernet10GbE + 2.5GbE
WirelessWi-Fi 7 (802.11be, 320 MHz) + Bluetooth 5.4
OverclockingCPU + memory
VRM23+2+2 phases, 110 A stages
BIOSDual UEFI, BIOS flashback button

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Cite this page: Hardware Spec Index, “Zephyra MB-6643 Prime X870E E-ATX Wi-Fi 7 Motherboard”, https://vextor7.com/item/8553690 (accessed 2026-10-20).