D3-S4520 & D3-S4620 SSDs (Formerly Intel) Solidigm D3-S4520 and D3-S4620 SSDs (Formerly Intel) feature 144-Layer, TLC, Intel® 3D NAND and is designed to improve overall system reliability and flexibility while preserving legacy infrastructure. The SSDs reduce storage operating costs and accelerate read-intensive and mixed workloads with power-efficient performance.