Hardware Spec Index

Kyndral MB-3921 Prime B550 ATX Motherboard

Motherboards · Kyndral · SKU MB3921-PRIME · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index1,816 (Motherboards scale)
Category rank#43,950
Street price$79
Power17 W
Performance per dollar22.99
Released2021

Specifications

BrandKyndral
ModelKyndral MB-3921 Prime
SocketAM4
ChipsetB550
Form factorATX
Memory4× DDR4 DIMM, up to 128 GB
Max memory speedDDR4-4800+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots4 total
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessNone
OverclockingCPU + memory
VRM11+1+1 phases, 60 A stages
BIOSUEFI

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Cite this page: Hardware Spec Index, “Kyndral MB-3921 Prime B550 ATX Motherboard”, https://vextor7.com/item/5240791 (accessed 2026-10-25).