The Samsung PM981 (MZVLB1T0HBLR-000L2) is an OEM solid-state drive in the M.2 2280 form factor, commonly found in high-end laptops and prebuilt systems. It is available in capacities ranging from 256 GB to 1 TB. This page reports specifications for the 1 TB variant. The SSD connects to the system using a PCI-Express 3.0 x4 interface and operates on the NVMe 1.3 protocol. The PM981 features the Samsung Phoenix (S4LR020) controller and includes a DRAM cache for enhanced performance. Samsung has equipped this SSD with 3D TLC NAND, manufactured in-house. Like other high-performance NVMe drives, it employs TurboWrite, a pseudo-SLC caching mechanism that improves burst write speeds before transitioning to native TLC speeds. The PM981 is rated for sequential read speeds of up to 3,500 MB/s and write speeds of up to 3,000 MB/s. Random IOPS performance reaches 580K for read and 550K for write operations. While designed for OEM integration, it offers similar performance to the Samsung 970 EVO, though it lacks official Samsung Magician software support. The launch price of this SSD is unknown, as it is primarily distributed to OEMs. The warranty period depends on the original system manufacturer, but Samsung rates the endurance at 600 TBW, aligning with other consumer-grade NVMe SSDs.