The first is AMD's Ryzen Threadripper 2920X, a 12-core, 24-thread model that's ostensibly similar to the 1st Gen. 1920X. Modifications to AMD's Precision Boost technology means that its headline (non-XFR) Turbo mode now reaches 4.3GHz from 4.0GHz and will maintain a higher clock speed across all cores for longer.