The AMD Ryzen 9 3900X technical specifications and performance benchmarks are detailed on this page. The release date is Q3/2019. AMD Ryzen 9 3900X supports the installation of AM4 socket on the motherboard. The number of cores is 12 with the base clock speed of 3.80 GHz. Maximum capacity and type of RAM supported are DDR4-3200. TDP is 105 W.
The class and series of processors to which the chip version relates. The younger the gen, the more advanced the microelectronics production process, and hence the productivity is considerably higher. Consider the example of AMD Ryzen 9 3900X.