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Small rectangular circuit board with gold edge connector and black label, 22 by 30 mm

Western Digital

Western Digital PC SN740 1TB M.2 2230 NVMe internal SSD

SKU CH-36QZ-2X09D MPN SN740

A 2230 NVMe drive delivering 5150 MB/s read and 4850 MB/s write speeds for Steam Deck, ROG Flow X and compatible ultraportables

  • Device TypeInternal Solid State Drive (SSD)
  • Sequential read up to 5150MB/s via PCIe 4.0 x4 NVMe
  • Sequential write up to 4850MB/s via PCIe 4.0 x4 NVMe
  • Compact 2230 M.2 form factor fits Steam Deck and thin laptops
  • 50% higher read performance than SN730 with 45% lower power consumption
  • Backward compatible with PCIe 3.0 x4 for broad device support

Built for compact devices

The Western Digital PC SN740 is a 1TB M.2 2230 NVMe SSD designed for thin-and-light laptops and handheld PCs such as the Steam Deck, ASUS ROG Flow X, Surface Pro 9 and GPD Win Max 2. Its 22 by 30 millimetre form factor fits the tight slots found in those systems. Sequential reads reach 5150MB/s and writes reach 4850MB/s over a PCIe 4.0 x4 link.

Drops into a PCIe 4.0 slot

The drive connects through an M.2 PCIe 4.0 x4 interface and is backward compatible with PCIe 3.0 x4, though full speed requires a 4.0 host. It draws 45 percent less power than the earlier 730 model, leaving more headroom for battery life in portable devices. No extra cables or brackets are needed; the drive installs directly into the existing M.2 slot.

Single-drive package

The box contains only the 1TB SN740 2230 module itself. No heatsink, adapter or cloning software is bundled, so the buyer must rely on the host device’s built-in thermal solution and provide their own migration method if required.

Points forts

  • Sequential read up to 5150MB/s via PCIe 4.0 x4 NVMe
  • Sequential write up to 4850MB/s via PCIe 4.0 x4 NVMe
  • Compact 2230 M.2 form factor fits Steam Deck and thin laptops
  • 50% higher read performance than SN730 with 45% lower power consumption
  • Backward compatible with PCIe 3.0 x4 for broad device support

Caractéristiques

Device TypeInternal Solid State Drive (SSD)

Questions sur cet article

What is the sequential write speed that limits sustained transfers on the SN740 1TB?

The drive writes sequentially at up to 4850 MB/s, so long continuous copies will hit that ceiling first.

How much power does the SN740 1TB draw during all-day operation compared to the earlier model?

Power consumption is reduced by 45 percent versus the SN730, keeping heat and noise low during extended use.

Which M.2 slot length must the laptop or handheld already have to accept this 2230 drive?

The drive measures 22 by 30 mm, so the system needs an M.2 2230 slot.

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