After Biostar and GIGABYTE, ASUS has also begun producing its A620A chipset motherboard models for the entry-level market.

ASUS Unveils Six New A620A Chipset Motherboards for Zen 4 and Zen 5 CPUs; PRIME and TUF Models Released

The A620A chipset is a cut-down A620, which uses the Promontory 19 silicon, which is also used by the B550 chipset instead of Promontory 21. There's not much difference between the two, except for the chipset uplink speed, as the A620A relies on the PCIe 3.0 x4 connection, while the A620 chipset uses PCIe 4.0 x4. These connect the chipset to the CPU, and with half the uplink bandwidth, the A620A isn't as convenient as the A620 for heavier I/O usage.

Not all motherboard manufacturers utilize the A620A chipset for their motherboards since the A620 gets the job done

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