My question is about:
ASUS ZenBook Pro UX501JW-CM199H laptop.
It has 8gb (4+4) ram and I want to extend it to 12gb (it possible) but I want to know if I need to buy 4GB ram or new 8gb and exchange it with the 4gb already exist.
Should I but 4 gb or 8 gb?
Should I but 4 gb or 8 gb?