Lexar NM990 Internal SSD - 4TB

The Lexar NM990 internal SSD offers a storage capacity of 4 TB in an M.2 2280 format, ideal for pe...

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Product Information

Full details

The Lexar NM990 4TB SSD is designed for power users, including gamers, content creators, and professionals who require extreme storage performance and capacity. Its key benefit is lightning-fast data access, significantly reducing load times and improving workflow efficiency. A potential consideration is that PCIe Gen5 technology requires compatible hardware to achieve its full potential. This M.2 2280 NVMe SSD boasts a 4TB capacity, PCIe Gen5 x4 interface, and sequential read/write speeds up to 14,000 MB/s and 12,000 MB/s, respectively, offering next-level performance for demanding applications and large file transfers.

All features

SeriesNM990
Model Part NumberLNM990X004T-RNNNG
BrandLexar

Extended Product Information

FAQs

What is the warranty period for the Lexar NM990 4TB SSD?

Lexar typically offers a limited warranty for their SSDs. For the most accurate information, please refer to the product packaging or Lexar's official support website, as warranty terms can vary by region and product.

Do I need a heatsink for this SSD?

While not strictly required, it is highly recommended to use a heatsink, especially if your motherboard does not come with one, or if you plan on performing sustained heavy workloads. PCIe Gen5 SSDs can get hot, and a heatsink helps prevent thermal throttling and ensures consistent performance.

Can I use this SSD in a PS5 or Xbox Series X/S?

The Lexar NM990, with its M.2 2280 form factor and NVMe interface, is compatible with PS5s that have an M.2 expansion slot. For Xbox Series X/S, direct M.2 slot expansion is not supported; proprietary expansion cards are required. Always check the specific console's requirements for M.2 SSDs (e.g., speed, heatsink recommendations).

What is the difference between sequential and random speeds?

Sequential speeds (MB/s) refer to the speed of reading or writing large, contiguous blocks of data, like copying a large file. Random speeds (IOPS) refer to the speed of reading or writing small, scattered blocks of data, which is crucial for operating system responsiveness, application loading, and multitasking.

Will this SSD work in a motherboard with only PCIe Gen4 slots?

Yes, the Lexar NM990 is backward compatible. It will work in a PCIe Gen4 M.2 slot, but its performance will be limited by the maximum speeds of the PCIe Gen4 interface (typically around 7,000 MB/s sequential read).

How do I check the TBW (Total Bytes Written) rating?

The TBW rating (3000 TBW for this model) indicates the total amount of data that can be written to the drive over its lifetime. You can monitor the drive's health and actual TBW usage using SSD utility software, often provided by the SSD manufacturer or available from third-party sources.

Troubleshooting

SSD not detected by BIOS/OS

Ensure the SSD is firmly seated in the M.2 slot and secured. Verify that your motherboard BIOS is updated to the latest version and that M.2 slots are enabled in the BIOS settings. If using a PCIe Gen4/Gen3 slot, ensure it's configured for NVMe.

Slow transfer speeds

Confirm the SSD is installed in a PCIe Gen5 M.2 slot if your system supports it. Check system temperatures; overheating can cause thermal throttling. Ensure your source and destination drives/connections are not the bottleneck. Update chipset drivers and SSD firmware.

Drive shows up but cannot be formatted

Try initializing the disk in Disk Management (Windows) or Disk Utility (macOS). If problems persist, try a different M.2 slot or test on another computer to rule out hardware conflicts.

System instability or crashes after installation

Ensure adequate power supply to your system. Check for overheating of the SSD or other components. Remove other non-essential peripherals to test for conflicts. Verify firmware and driver compatibility.

Pros and Cons

Pros

  • Exceptional sequential read and write speeds for rapid data access.
  • Large 4TB capacity suitable for demanding storage needs.
  • Latest PCIe Gen5 technology for future-proof performance.
  • High random IOPS contribute to excellent system responsiveness.
  • Compact M.2 2280 form factor offers wide compatibility.

Cons

  • Requires a compatible PCIe Gen5 M.2 slot to achieve maximum performance.
  • May generate significant heat under sustained heavy load, potentially requiring good system cooling.
  • Higher cost associated with cutting-edge PCIe Gen5 technology.

Setup, Compatibility & Care

Setup:

  1. Ensure your motherboard or device has an M.2 2280 slot that supports PCIe Gen5 NVMe SSDs for optimal performance. A PCIe Gen4 slot will work but at reduced speeds.
  2. Safely power down your computer or device.
  3. Open the relevant access panel to reach the M.2 slot.
  4. Carefully insert the Lexar NM990 SSD into the M.2 slot at an angle, then gently push it down.
  5. Secure the SSD with the provided screw or retaining clip.
  6. Close the access panel and power on your system.
  7. Your operating system should detect the new drive. You may need to initialize and format it via Disk Management (Windows) or Disk Utility (macOS) if it's your primary drive or doesn't appear automatically.

Compatibility:

  • Component For: PC, Notebook, Game Console
  • Interface: PCIe Gen5 x4 NVMe 1.4
  • Form Factor: M.2 2280 (22mm x 80mm)
  • Requires an M.2 slot supporting NVMe and ideally PCIe Gen5 for full speeds. Backward compatible with PCIe Gen4 and Gen3 slots, but performance will be limited by the slot's capabilities.

Care:

  • Thermal Management: PCIe Gen5 SSDs can generate heat under heavy, sustained loads. Ensure your system has adequate airflow or consider a motherboard with an M.2 heatsink to prevent thermal throttling and maintain peak performance.
  • Avoid Physical Shock: While durable (1500 G operating shock resistance), it's best to handle the drive carefully during installation.
  • Firmware Updates: Periodically check Lexar's support website for firmware updates, which can sometimes improve performance or stability.

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