Dominator Titanium RGB sits alongside Vengeance in Corsair's DDR5 range, sold under a 6600 name that also covers 5600- and 6000-rated kits at looser CL30/CL36 timings.
The 2×16GB kit here totals 32GB, rated 5600 MT/s CL36. Configurations run from two-module 32GB kits to four-module sets as large as 96GB, and because several speed and CL combinations share one product name, the figure on the specific listing — not the "6600" in the title — is what to check against a board's supported speeds.
Every kit in this line carries RGB lighting, and all of it is unbuffered DDR5 UDIMM for desktop platforms.