HP D78CKPA, AMD Ryzen™ 9, 9950X3D, 64 GB, DDR5-SDRAM, Windows 11 Pro HP D78CKPA. Processor family: AMD Ryzen™ 9, Processor model: 9950X3D. Internal memory: 64 GB, Internal memory type: DDR5-SDRAM, Memory clock speed: 6000 MHz. On-board graphics card model: AMD Radeon Graphics, Discrete graphics card model: NVIDIA GeForce RTX 5090. Wi-Fi. Operating system installed: Windows 11 Pro. Chassis type: Tower. Weight: 49.8 lbs (22.6 kg). Product color: Black