SSD D5-P4320 & D5-P4420 Series (Formerly Intel) Solidigm SSD D5-P4320 and D5-P4420 Series deliver big, affordable, and reliable storage to the warm data tier. The Solidigm devices offer 33% more bits per cell than TLC. The Solidigm QLC 3D NAND drives enable 3x storage consolidation compared to hard disk drives (HDDs), leading to lower operational costs. The D5-P4320 is a PCIe-enabled QLC drive for the data center that provides the ability to scale to large capacities. It delivers the performance needed for storage workload requirements. The D5-P4420 drive offers double the endurance, supporting an even wider range of workloads.