WD Black SN850X SSD M.2 NVMe PCI-E Gen4 - 4TB

Strap in for breakneck gaming speeds with the WD_BLACK SN850X NVMe SSD. Crush load times and slash...

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OnBuy.comWestern Digital Sn350 M.2 240 Gb Pci Express 3.0 Nvme Green 718037882383
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eBayWD Green SN350 480GB NVMe M.2 2280 Internal SSD WDS480G2G0C New Sealed
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PcNova.co.ukWestern Digital Green Sn350 500 Gb M.2 Pci Express 3.0 Nvme Tlc
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Clove TechnologyWestern Digital Green Sn350 - Pci Express 3.0 Tlc Nvme M.2 Ssd - 500 Gb
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AmazonWD_BLACK SN850X NVMe SSD 1TB (up to 7,300MB/s read speed, up to 6,300MB/s write speed, M.2 2280, PCIe Gen4, Gaming Expansion storage, High Performance Internal solid state drive) POWERED BY SANDISK
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eBayWestern Digital WDS400T2X0E-00BCA0 4TB M.2 2280 PCIe NVMe SSD - 1yr Wty
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eBayWD BLACK SN850X 4TB M.2 NVMe SSD For Sony PS5 PC Laptop Computers
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Product Information

Full details

The WD_BLACK SN850X NVMe SSD is designed for PC gamers seeking the ultimate performance edge. Its primary benefit is drastically reduced load times and smoother gameplay thanks to its PCIe Gen4 speeds. A potential caveat is that its advanced features like Game Mode 2.0 are exclusive to Windows operating systems. This drive offers breakneck speeds, low latency, and capacities up to 4TB, with an optional heatsink for sustained performance, making it ideal for competitive gaming, streaming, and content creation.

All features

SeriesWD_BLACK SN850X
Model Part NumberWDS400T2X0E-00BCA0
BrandWestern Digital

Extended Product Information

FAQs

What is the difference between the SN850X and previous WD_BLACK SSDs?

The SN850X offers improved performance over its predecessors, particularly in its ability to approach the maximum theoretical speeds of the PCIe Gen4 interface, along with enhanced features like Game Mode 2.0 for optimized gaming.

Do I need a heatsink for the WD_BLACK SN850X?

While the drive can operate without a heatsink, it is recommended for sustained heavy workloads like prolonged gaming sessions to prevent thermal throttling and maintain peak performance. An optional heatsink version is available for the 1TB and 2TB models.

What are the benefits of Game Mode 2.0?

Game Mode 2.0 (Windows only) helps boost PC performance for gaming by features like load prediction, which pre-loads game assets to reduce in-game loading times and stuttering.

Can I use this SSD in a PlayStation 5?

While the SN850X meets the speed requirements for PS5 storage expansion, it is recommended to use a model with an integrated heatsink or ensure you add a compatible heatsink, as the PS5's internal M.2 slot has specific clearance and cooling requirements.

What is the TBW rating, and what does it mean?

TBW stands for Terabytes Written. The 2400 TBW rating for the 4TB model indicates the total amount of data that can be written to the drive over its lifetime before the NAND flash memory may begin to degrade. For typical gaming use, this rating is very high and unlikely to be reached.

Is the WD_BLACK SN850X compatible with PCIe Gen3 slots?

Yes, the WD_BLACK SN850X is backward compatible with PCIe Gen3 slots. However, it will operate at the maximum speeds supported by the PCIe Gen3 interface, which are significantly lower than PCIe Gen4.

How do I update the firmware on my SN850X?

You can update the firmware using the WD_BLACK Dashboard software, available for download from Western Digital's website. Ensure your drive is detected and connected before initiating the update.

Troubleshooting

Drive not detected by BIOS or OS

Ensure the M.2 drive is securely seated in the slot. Check if the M.2 slot is enabled in the BIOS settings. Update your motherboard's BIOS to the latest version. Try a different M.2 slot if available.

Slow transfer speeds

Verify that the drive is installed in a PCIe Gen4 x4 M.2 slot and that your motherboard/CPU supports Gen4 speeds. Ensure the correct NVMe drivers are installed. Check Game Mode 2.0 settings in the WD_BLACK Dashboard software (Windows only).

Drive overheating during heavy use

Ensure your computer case has adequate airflow. Consider using the WD_BLACK SN850X with the optional heatsink. Monitor drive temperatures using WD_BLACK Dashboard software and close unnecessary background applications.

System instability or crashes

Ensure the drive firmware is up to date via WD_BLACK Dashboard. Check for Windows updates. Run disk checks (e.g., `chkdsk`) to identify potential file system errors.

Pros and Cons

Pros

  • Blazing-fast load times and transfer speeds due to PCIe Gen4 interface.
  • Low latency ensures a smooth and responsive gaming experience.
  • Generous storage capacities are available for large game libraries.
  • Optional heatsink improves thermal management for sustained performance.
  • Game Mode 2.0 optimizes performance specifically for gaming on Windows.

Cons

  • Game Mode 2.0 is only compatible with Windows operating systems.
  • Requires a motherboard with an M.2 slot supporting PCIe Gen4 for maximum speed.
  • Higher performance may require active cooling or a heatsink, especially in compact systems.
  • NVMe drives can be sensitive to physical shock and extreme temperatures.

Setup, Compatibility & Care

Setup:

  1. Ensure your motherboard has an M.2 slot that supports NVMe and PCIe Gen4 x4 for optimal performance.
  2. Power off your computer and unplug it from the power source.
  3. Open your computer case and locate the M.2 slot.
  4. Carefully insert the WD_BLACK SN850X SSD into the M.2 slot at an angle.
  5. Secure the SSD with the provided screw (or the motherboard's M.2 retention mechanism).
  6. Close the computer case, reconnect power, and boot up your system.
  7. The drive should be recognized by your BIOS. You may need to initialize and format it within your operating system's disk management utility.

Compatibility:

  • Interface: PCIe Gen4 x4 (backward compatible with PCIe Gen3, but at reduced speeds).
  • Form Factor: M.2 2280.
  • Operating Systems: Windows 10, Windows 11, Windows 8.1. Game Mode 2.0 features are Windows-exclusive.
  • Motherboard: Requires a compatible M.2 slot. For full PCIe Gen4 speeds, a Gen4-compatible motherboard and CPU are necessary.

Care:

  • Temperature: Operate within the specified temperature range (0°C to 85°C). Avoid sustained high temperatures, especially during heavy loads, by ensuring adequate airflow or using the heatsink version.
  • Physical Handling: While internal SSDs are generally robust, avoid dropping or subjecting the drive to strong impacts.
  • Software: Consider installing the WD_BLACK Dashboard software for drive monitoring, firmware updates, and to enable Game Mode 2.0 (Windows only).

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