Lexar NM620 512GB SSD, PCIe 3.0 x4, NVMe 1.4, M.2 2280

• Form Factor: M.2 2280
• Interface: PCIe Gen3 x4 (NVMe 1.4 protocol)
• Sequential Read Speed: Up to 3,300 MB/s to 3,500 MB/s
• Sequential Write Speed: Up to 2,400 MB/s
• NAND Flash Type: 3D TLC NAND
• Endurance Rating: 250 TBW (Terabytes Written)
• Warranty: 5-year limited manufacturer warranty [1, 2, 3, 4]

Key Architectural & Performance Insights

• DRAM-less Design: According to hardware analysis from TechPowerUp, the NM620 does not feature a dedicated DRAM cache. Instead, it uses a pseudo-SLC cache allocation to buffer bursts of incoming files and sustain initial write speeds. [1]
• Hardware Controller: The drive runs on an InnoGrit IG5216 (Shasta+) controller paired with 96-layer TLC NAND flash. This combination allows it to deliver up to 6 times the speed of traditional SATA-based SSDs. [1, 2]
• Data Reliability: Built-in Low-Density Parity Check (LDPC) error correction technology identifies and fixes data transmission errors dynamically before they cause system slowdowns. [1]
• Physical Layout: It features a single-sided PCB design, meaning all flash memory components sit on one side. This ultra-thin physical profile makes it highly compatible with thin laptops and tight desktop builds

Lexar NM620 512GB