Report an Error

Lexar NQ790 2 TB

2 TB
Capacity
MAP1602A
Controller
TLC
Flash
PCIe 4.0 x4
Interface
M.2 2280
Form Factor
SSD Controller
Controller
NAND Die
NAND Die
The Lexar NQ790 is a solid-state drive in the M.2 2280 form factor, launched in 2024. It is available in capacities ranging from 500 GB to 2 TB. This page reports specifications for the 2 TB variant. With the rest of the system, the Lexar NQ790 interfaces using a PCI-Express 4.0 x4 connection. The SSD controller is the MAP1602A Falcon Lite from MaxioTech, a DRAM cache is not available. Lexar has installed 128-layer TLC NAND flash on the NQ790, the flash chips are made by YMTC. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are handled more quickly. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The NQ790 is rated for sequential read speeds of up to 7,000 MB/s and 6,000 MB/s write; random IO reaches 800K IOPS for read and 600K for writes.
At its launch, the SSD was priced at 137 USD. The warranty length is set to five years, which is an excellent warranty period. Lexar guarantees an endurance rating of 1200 TBW, a typical value for consumer SSDs.

Solid-State-Drive

Capacity: 2 TB (2000 GB)
Variants: 500 GB 1 TB 2 TB
Overprovisioning: 185.4 GB / 10.0 %
Production: Active
Released: 2024
Price at Launch: 137 USD
Part Number: LNQ790X002T-RNNNG LNQ790X002T-RNNNU
Market: Consumer

Physical

Form Factor: M.2 2280 (Single-Sided)
Interface: PCIe 4.0 x4
Protocol: NVMe 1.4
Power Draw: Unknown

Controller

Manufacturer: MaxioTech
Name: MAP1602A Falcon Lite
Architecture: ARM 32-bit Cortex-R5
Core Count: Quad-Core
Foundry: TSMC
Process: 12 nm
Flash Channels: 4 @ 2,400 MT/s
Chip Enables: 4
Controller Features: HMB (enabled)

NAND Flash

Manufacturer: YMTC
Name: Xtacking 2.0 (CDT2A)
Type: TLC
Technology: 128-layer
Speed: 2400 MT/s
Capacity: 4 chips @ 4 Tbit
ONFI: 4.0
Topology: Charge Trap
Die Size: 60 mm²
(8.5 Gbit/mm²)
Dies per Chip: 8 dies @ 512 Gbit
Planes per Die: 4
Decks per Die: 2
Word Lines: 141 per NAND String
90.8% Vertical Efficiency
Read Time (tR): 46 µs
Program Time (tProg): 620 µs
Block Erase Time (tBERS): 9.0 ms
Die Read Speed: 1391 MB/s
Die Write Speed: 103 MB/s
Endurance:
(up to)
3000 P/E Cycles
(60000 in SLC Mode)
Page Size: 16 KB
Plane Size: 2304 Blocks

DRAM Cache

Type: None
Host-Memory-Buffer (HMB): 40 MB

Performance

Sequential Read: 7,000 MB/s
Sequential Write: 6,000 MB/s
Random Read: 800,000 IOPS
Random Write: 600,000 IOPS
Endurance: 1200 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:
  • Unknown
RGB Lighting: No
PS5 Compatible: Yes

Same Drive

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

Notes

Controller:

This controller features multiples variants:
F1C - Uses NVMe 1.4
F2C - Uses NVMe 1.4
F3C - Uses NVMe 2.0
F3C U - For 4TB SSDs and uses NVMe 2.0

NAND Die:

Array Eficiency of over 92%
Xtacking 3.0 introduces back side source connect (BSSC) for memory cell wafer, which leads to simpler process and lower cost
This layout has a 2x 2 Plane layout
It achieves 26µs in read latencies in pSLC Mode, and also 180 µs in tPROG in pSLC Mode.

Oct 5th, 2024 02:08 EDT change timezone

New Forum Posts

Popular Reviews

Controversial News Posts