AMD has expanded their 3rd generation Ryzen desktop processors lineup by adding the Ryzen 9 3900 and Ryzen 5 3500X. It does appear that both of these models are for OEM only, which means most of us won’t be able to get their hands on them. The Ryzen 9 3900 is sort of a little brother to the flagship 3900X, it is a 12-core, 24-thread chip with a 3.10 GHz base clock and 4.30 GHz boost clock (compared to the 3.80 GHz / 4.60 GHz of the 3900X). The slight drop in frequency allows it to only have a TDP of 65W (compared to the 105W of the 3900X).
The Ryzen 5 3500X on the other hand is more of a big brother to the Ryzen 5 3500. It is a 6-core, 12-thread part that does feature SMT. The regular Ryzen 5 3500 is only 6-core, 6-thread without SMT. It has the same base clock of the Ryzen 5 3600 at 3.60 GHz, but it boost is slightly lower at 4.10 GHz compared to the 4.2 GHz of the 3600. The 3500X will be slightly cheaper than the 3600 at around $189. No word on pricing on the 3900 yet.