Hardware Spec Index

Kyndral MB-3990 Pro A620 E-ATX Motherboard

Motherboards · Kyndral · SKU MB3990-PRO · Released 2024 · Updated 2026-10-19

Key facts

Benchmark index2,012 (Motherboards scale)
Category rank#7,574
Street price$89
Power19 W
Performance per dollar22.61
Released2024

Specifications

BrandKyndral
ModelKyndral MB-3990 Pro
SocketAM5
ChipsetA620
Form factorE-ATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-6400+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots5 total
Rear USB-C1× USB 3.2 Gen 2 10Gbps (Type-C)
Ethernet2.5GbE
WirelessNone
OverclockingMemory only
VRM11+1+1 phases, 50 A stages
BIOSUEFI

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Cite this page: Hardware Spec Index, “Kyndral MB-3990 Pro A620 E-ATX Motherboard”, https://vextor7.com/item/19004526 (accessed 2026-10-19).