HP D36A1PA, AMD Ryzen Threadripper PRO, 64 GB, DDR5-SDRAM, DVD±RW, Windows 11 Pro HP D36A1PA. Processor family: AMD Ryzen Threadripper PRO. Internal memory: 64 GB, Internal memory type: DDR5-SDRAM, Memory clock speed: 6400 MHz. Optical drive type: DVD±RW. Operating system installed: Windows 11 Pro. Chassis type: Tower. Product type: Workstation