Socket sTRX4


Socket sTRX4, also known as Socket SP3r3, is a land grid array CPU socket designed by AMD supporting its Zen 2-based Ryzen Threadripper desktop processors, launched on November 25, 2019 for the high-end desktop and workstation platforms.
Socket sTRX4 is the direct successor to Socket TR4 used in the first- and second-generation Ryzen Threadripper products. It is physically identical to, but electrically incompatible with both TR4 and AMD's server Socket SP3.
While Socket SP3 doesn't require a chipset, instead utilizing a system-on-a-chip design, Socket sTRX4 and its predecessor require a chipset to provide improved connectivity and functionality. For Socket sTRX4, the TRX40 chipset was developed, which provides a total of 88 PCIe 4.0 lanes, an increase from the 66 PCIe 3.0 lanes on its predecessor platform. Also it no longer features a built-in High Definition Audio controller, a feature appearing in every new platform since 2004 as a replacement of AC'97; instead motherboard manufacturers are including a separate USB audio controller onboard to provide audio functionality, such as Realtek's ALC4050H controller + ALC1220 codec. AMD has promised long-term support for socket sTRX4.