Hardware Spec Index

Zephyra MB-8421 Ultra X870E ATX Wi-Fi 7 Motherboard

Motherboards · Zephyra · SKU MB8421-ULTRA · Released 2026 · Updated 2026-10-19

Key facts

Benchmark index5,571 (Motherboards scale)
Category rank#17,370
Street price$609
Power50 W
Performance per dollar9.15
Released2026

Specifications

BrandZephyra
ModelZephyra MB-8421 Ultra
SocketAM5
ChipsetX870E
Form factorATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-8000+ (OC)
Primary x16 slotPCIe 5.0 x16
M.2 slots3 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
VRM22+2+2 phases, 90 A stages
BIOSDual UEFI, BIOS flashback button

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Cite this page: Hardware Spec Index, “Zephyra MB-8421 Ultra X870E ATX Wi-Fi 7 Motherboard”, https://vextor7.com/item/150706 (accessed 2026-10-19).