Should I get 4gb or 8gb RAM to mix with my current 4gb RAM?

Ghost_Violinist

Prominent
May 19, 2017
1
0
510
I have an ASUS laptop (R558UQ i5) with 4 gb RAM ddr4 memory. i want to extend it but am confused if i should buy similar ram of 4gb to get advantage of dual channelling or 8gb ram to gain higher memory. Please help me with it

Main purpose: Moderate gaming, Designing and Analysis, multitasking
https://www.asus.com/in/Laptops/R558UQ/specifications/

Memory
4 GB DDR4 2133MHz SDRAM Onboard Memory, 1 x SO-DIMM socket for expansion, up to 12 GB SDRAM

:pt1cable: