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Lexar NM620 256 GB (IG5216 + Micron B27B)

256 GB
Capacity
IG5216
Controller
TLC
Flash
PCIe 3.0 x4
Interface
M.2 2280
Form Factor

Multiple hardware versions found.

Performance could vary due to unannounced flash/controller changes.

Package
Package
SSD Controller
Controller
The Lexar NM620 is a solid-state drive in the M.2 2280 form factor, launched on March 10th, 2021. It is available in capacities ranging from 256 GB to 2 TB. This page reports specifications for the 256 GB variant. With the rest of the system, the Lexar NM620 interfaces using a PCI-Express 3.0 x4 connection. The SSD controller is the IG5216 (Shasta+) from InnoGrit, a DRAM cache is not available. Lexar has installed 96-layer TLC NAND flash on the NM620, the flash chips are made by Micron. Please note that this SSD is sold in multiple variants with different NAND flash or controller, which could affect performance, the "Notes" section at the end of this page has more info. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are handled more quickly. The NM620 is rated for sequential read speeds of up to 3,300 MB/s and 1,300 MB/s write; random IO reaches 92K IOPS for read and 240K for writes.
At its launch, the SSD was priced at 45 USD. The warranty length is set to five years, which is an excellent warranty period. Lexar guarantees an endurance rating of 125 TBW, a relatively low value compared to other SSDs.

Solid-State-Drive

Capacity: 256 GB
Variants: 256 GB 512 GB 1 TB 2 TB
Hardware Versions:
Overprovisioning: 17.6 GB / 7.4 %
Production: Active
Released: Mar 10th, 2021
Price at Launch: 45 USD
Part Number: LNM620X256G-RNNU
Market: Consumer

Physical

Form Factor: M.2 2280 (Single-Sided)
Interface: PCIe 3.0 x4
Protocol: NVMe 1.4
Power Draw: Unknown

Controller

Manufacturer: InnoGrit
Name: IG5216 (Shasta+)
Architecture: ARM 32-bit Cortex-R5
Core Count: Dual-Core
Frequency: 525 MHz
Foundry: TSMC
Process: 28 nm
Flash Channels: 4 @ 1,066 MT/s
Controller Features: HMB (enabled)

NAND Flash

Manufacturer: Micron
Name: B27B FortisFlash
Type: TLC
Technology: 96-layer
Speed: 533 MT/s .. 1200 MT/s
Capacity: 2 chips @ 1 Tbit
ONFI: 4.1
Topology: Floating Gate
Dies per Chip: 2 dies @ 512 Gbit
Planes per Die: 4
Decks per Die: 2
Word Lines: 108 per NAND String
88.9% Vertical Efficiency
Read Time (tR): 87 µs
Program Time (tProg): 800 µs
Block Erase Time (tBERS): 15 ms
Die Write Speed: 84 MB/s
Endurance:
(up to)
3000 P/E Cycles
(40000 in SLC Mode)
Page Size: 16 KB
Block Size: 3456 Pages
Plane Size: 338 Blocks

DRAM Cache

Type: None
Host-Memory-Buffer (HMB): 64 MB

Performance

Sequential Read: 3,300 MB/s
Sequential Write: 1,300 MB/s
Random Read: 92,000 IOPS
Random Write: 240,000 IOPS
Endurance: 125 TBW
Warranty: 5 Years
MTBF: 1.5 Million Hours
Drive Writes Per Day (DWPD): 0.3
SLC Write Cache: Yes

Features

TRIM: Yes
SMART: Yes
Power Loss Protection: No
Encryption:
  • No
RGB Lighting: No
PS5 Compatible: No

Same Drive

This section lists other SSDs in our database using the exact same hardware components

Notes

Drive:

Controller has been rebranded by Lexar / LongSys

Controller:

NAND Flash BUS: could be close to 1066 MT/s not confirmed though.

NAND Die:

tPROG - 800 µs (withouh Vpp)
tPROG w/ ~ 25% Overhead: ~ 914 µs (Avg 70 MB/s per each die)

Oct 5th, 2024 02:28 EDT change timezone

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