AMD TRX40 Supports 3rd Gen AMD Ryzen Threadripper Desktop Processors for Socket sTRX4 Supports JEDEC 1R 3200/ 2666/ 2400/ 2133 MHz 1DPC 1R max speed 4666 MHz 1DPC 2R max speed 4000 MHz 2DPC 1R max speed 4000 MHz 2DPC 2R max speed 3600 MHz