AMD Ryzen 7 7800X3D user seeks RAM upgrade advice

A user is seeking advice regarding a RAM upgrade for a system featuring an AMD Ryzen 7 7800X3D processor and an ASUS TUF Gaming X670E-Plus WIFI motherboard. The user currently utilizes 64 GB of RAM (2x 32 GB G.Skill Trident Z5 NEO RGB) and aims to upgrade to a total of 64 GB by adding more modules, or is inquiring about the feasibility of adding identical sticks to reach a higher capacity.

The inquiry focuses on whether purchasing identical RAM modules will ensure system stability and what potential performance loss might occur when using four sticks compared to a 2x 64 GB configuration.