Intel 660p: The first consumer QLC based SSD


The Intel 660p is the company’s second PCIe NVMe Solid State Drive (SSD) that is fitted with the 64-Layer Quadruple-Level-Cell (QLC) 3D NAND Flash. Flash memory products equipped with QLC NAND are capable of saving four bits per cell; thus, being able to represent 16 voltage levels in a single flash memory cell.

The improved storage density associated with the new QLC NAND flash technology gives Intel the capability to produce Die’s with higher capacities – the result is a noticeable improvement in the cost per GB while delivering similar read and write performance to existing 3D TLC NAND based SSDs. Effectively, the Intel SSD 660p is an ideal entry-level M.2 consumer solution that provides better performance at a lower price point in comparison to existing SATA SSDs and legacy Hard Disk Drives (HDDs).

Intel SSD 660p specifications
Capacity 512GB 1TB 2TB
Controller Silicon Motion SM2263
NAND Flash Intel 3D NAND QLC, 64-Layers
Form factor Single-sided M.2 (2280mm)
Interface PCIe 3.0×4, NVMe 1.3
Sequential Read Up to 1800MB/s
Sequential Write (SLC Cache) Up to 1800MB/s
Random Read (4kB) Up to 220k IOPS
Random Write (4kB, SLC Cache) Up to 220k IOPS
Endurance 100TBW 200TBW 400TBW
Warranty 5 years




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