Currently got an acer v laptop running a single 8gb stick. According to cpuz its a 5600Mhz.

I want to upgrade it to at least 16Gb, but looking at the prices i think it would be better to add another 8gb stick. Will it work if its only 4800Mhz?
Or theres a 16Gb ( 2x8 ) kit of 4800Mhz ive seen for sale reasonnably cheap. Will that be ok?
The CPU is an i5 13420H if that makes any difference.

I want to upgrade it to at least 16Gb, but looking at the prices i think it would be better to add another 8gb stick. Will it work if its only 4800Mhz?
Or theres a 16Gb ( 2x8 ) kit of 4800Mhz ive seen for sale reasonnably cheap. Will that be ok?
The CPU is an i5 13420H if that makes any difference.