AMD Ryzen Threadripper 1920X socket: Socket TR4

What the Threadripper 1920X is

The Ryzen Threadripper 1920X is a twelve core, twenty four thread HEDT processor with a 3.5 GHz base, up to 4.0 GHz boost and up to 4.2 GHz on extended range. It carries 6 MB of L2 with 32 MB of shared L3, for 38 MB total, and a 180 W TDP on the 14 nm process. AMD launched it on August 10, 2017 with the Threadripper 1000 series.

Twelve cores mark the point where renders scale clearly over the eight core bin while clocks stay high for mixed play. Two Zeppelin dies with two dummy dies sit under the large heat spreader. The multiplier is unlocked for tuning on X399 boards.

There is no integrated graphics, so a separate card is required. The launch price was $799 AMD SEP. The non-X 1920 never shipped, so this X SKU is the twelve core of the generation.

Socket and motherboard compatibility

The 1920X fits Socket TR4, a 4094 contact LGA socket that shares its size with server SP3 but is electrically incompatible. X399 is the only chipset, with quad channel DDR4 and 64 PCIe 3.0 lanes total per AMD. Boards need a BIOS that lists first gen Threadripper.

X399 boards carry eight DIMM slots and large voltage regulation for 180 W sustained loads. A TR4 specific cooler is mandatory for full heat spreader coverage. Check the maker CPU list for the minimum BIOS per board.

The chip ships without any cooler. The AMD Ryzen Threadripper 1900X is the eight core sibling on the same boards where clocks beat thread count.

Memory, PCIe and cooling

Memory support is DDR4-2667 in four channels. Four matched sticks give quad channel speed, with room for a second set where the board has eight slots. ECC UDIMM support follows the board maker list rather than the chip alone, so this page omits the ECC row.

PCI Express arrives as version 3.0 with 64 lanes total per AMD, 60 usable plus 4 to the chipset. Multi GPU renders and NVMe arrays fit the lane budget of a creator tower. Cooling needs a TR4 rated tower or liquid loop at 180 W.

Upgrade paths

On the same socket the step up is the sixteen core 1950X where thread count matters most, keeping the board and DDR4. The 1920X keeps its place where twelve cores cover renders below flagship cost.

Moving past TR4 means a new board on a current HEDT platform. Owners usually add memory or a faster GPU before replacing the processor.