Cudy wr3000 cpu/ filogic 820

On Cudy website they advertised Cudy Wr3000 has Cortex A53 1.3 Ghz dual core cpu and the node size of this cpu is 4nm. But after searching about filogic 820 some search says the node size of it's 12nm. So which one is true??
And the SQM it uses a lot cpu This filogic 820 can't handle 500 to 1 gbps with SQM.So how much bandwidth it can handle with this 1 core?

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