The Neo RGB branch of Trident Z5 is G.Skill's kit validated against AMD's EXPO profile rather than the Intel-first XMP that the standard Trident Z5 ships with. Every kit in this family carries the RGB light bar across the top — it isn't an optional trim level here.
Capacity is where the range spreads out more than speed does: 2×48GB gives 96GB in this listing, and the family runs from smaller paired kits up to sets meant for boards with four slots populated. Rated 6000 MT/s CL28 is only reached once EXPO — or XMP, on Intel boards that support translating it — is switched on in firmware; left on defaults, the same stick runs well under its rating.
This is DDR5 UDIMM, tall enough that it's worth checking clearance against a large air cooler before ordering.