The first rumors about AMD Ryzen 3000 XT series specifications are beginning to surface.  AMD Ryzen 3900 XT with boost up to 4.8 GHz The alleged clock speeds have been published on Chiphell forums. AMD Ryzen XT series would see a 200-300 MHz boost over existing series according to the rumor. No changes do the core count are to be expected, although this part is not yet confirmed. If the rumor is true then Ryzen 9 3900XT would see a boost clock of 4.8 GHz, which is an increase of 200 MHz over the 3900X model.