Hardware Spec Index

Kyndral MB-8640 Prime B650 ATX Wi-Fi 7 Motherboard

Motherboards · Kyndral · SKU MB8640-PRIME · Released 2024 · Updated 2026-10-22

Key facts

Benchmark index4,067 (Motherboards scale)
Category rank#29,697
Street price$279
Power37 W
Performance per dollar14.58
Released2024

Specifications

BrandKyndral
ModelKyndral MB-8640 Prime
SocketAM5
ChipsetB650
Form factorATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-6400+ (OC)
Primary x16 slotPCIe 4.0 x16
M.2 slots5 total, 1× PCIe 5.0 x4
Rear USB-C1× USB 3.2 Gen 2x2 20Gbps (Type-C)
Ethernet2.5GbE
WirelessWi-Fi 7 (802.11be, 320 MHz) + Bluetooth 5.4
OverclockingCPU + memory
VRM18+2+1 phases, 80 A stages
BIOSDual UEFI, BIOS flashback button

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Cite this page: Hardware Spec Index, “Kyndral MB-8640 Prime B650 ATX Wi-Fi 7 Motherboard”, https://vextor7.com/item/3000929 (accessed 2026-10-22).