Hardware Asylum checked out the Thermaltake Toughram XG RGB 4000Mhz 16GB Memory
A quote from the article:
Overall, the Toughram XG modules do the job and look great doing it. With the imminent release of DDR5 it is clear that Thermaltake wanted to get one last DDR4 memory release out the door before everything is retooled and help PC builders get some awesome Addressable RGB memory modules before they are gone forever.Thermaltake Toughram XG RGB 4000Mhz 16GB Memory Review