Socket sWRX8, also known as Socket SP3r4, is a land grid array (LGA) CPU socket designed by AMD supporting its Ryzen Threadripper Pro 3000 and 5000 series workstation processors, which are based on Zen 2 and Zen 3 platforms, respectively. It was initially launched in July 2020 for OEMs only, with retail availability coming later in March 2021.