Deciding for a ram upgrade for my laptop

[Ainred]

Hello, I just bought an Asus vivobook x505za laptop with the following specs:

 

-Ryzen 5 2500u with Vega 8 built-in

-4gb ram DDR4 2400mhz soldered in (1 extra slot for ram upgrade up to 16gb)

-1TB HDD

 

I only have common/basic hardware knowledge regarding computers, I'm planning for a ram upgrade due to my workload as it requires multitasking and just 2 windows are enough for the memory usage to spike up to 90% (I also do a bit of light gaming), I'm planning for an 8gb upgrade but I'm wondering if it'll be okay to use another stick that has different capacity to the one built-in?Would it be safer to consider a 4gb+4gb set up? Or is it safe to pick the 4gb+8gb option?

 

 

[Adorable Cat]

It'll work alright to use 4GB + 8GB

[Ainred]

1 minute ago, Adorable Cat said:

It'll work alright to use 4GB + 8GB

Thanks for the answer, is it safe to consider that I'll have compatibility or troubleshoot issues? Or will it have no problem at all?

[Adorable Cat]

It'll most likely work without issue, also don't worry about buying faster memory than 2400 because it'll automatically underclock it to match the soldered in RAM.