AMD Ryzen Threadripper 3960X, 3970X, and 3990X expected to be announced on November 5, require new TRX40 chipsets and new sockets - NotebookCheck.net News
AMD justifies the shift to sTRX4 socket for 3rd gen Threadrippers and promises long-term support, but current Threadripper owners appear to be unconvinced - NotebookCheck.net News
Ryzen Threadripper: TR4 Socket, X399 Chipset & Test Setup
Why using AM4 compatible coolers for Threadripper is not optimal! | TECHJUNKIES