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WD_BLACK SN7100 M.2 2280 4TB PCI-Express 4.0 x4 TLC 3D NAND Internal Solid State Drive (SSD) WDS400T4X0E
- HIGH-OCTANE GAMING. Experience speeds up to 7,000MB/s read and 6,700MB/s write, with up to 35% faster performance than previous generation.
- PURPOSE-BUILT. Designed for serious on-the-go gamers, with a PCIe Gen4 interface and Western Digital's next generation TLC 3D NAND.
- MORE SPACE FOR FAVORITES AND NEW TITLES. Available in multiple capacities up to 4TB*, upgrade to an SSD that gives you tons of storage.
- MORE TIME TO CLEAR THAT CHECKPOINT. Built with laptops and handheld gaming devices in mind, with up to 100% more power efficiency over the previous generation.***
- DO MORE WITH DASHBOARD. Ensure your drive is optimized for prime performance with the downloadable WD_BLACK Dashboard (Windows only).
- AMPLIFY YOUR CONTENT. Up to 2,400TBW endurance (4TB* model) for gameplay streaming, speedrun captures, or creating with the latest game engines.
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Overview
Specs
Reviews (13)
Get ready to game even faster with the WD_BLACK SN7100 NVMe SSD, featuring up to 7, 250MB/s read and 6, 900MB/s write speeds(1-2TB models), providing up to a 35% performance boost over the previous generation SSD. Engineered with laptops and gaming handhelds in mind, obliterate load times and conquer your heftiest gaming sessions with improved power efficiency at maximum speed. Store more games and still have room for future updates and DLC, with capacities up to 2TB. Upgrade now and ensure you're ready for the rigors of AI applications and next generation gaming.
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 5 years
- Limited Warranty period (labor): 5 years
- Read full details
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by Newegg.ca's Standard Return Policy.
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Manufacturer Contact Info
- Manufacturer Website
- Support Phone: 1-800-275-4932
- Support Website
- View other products from SanDisk
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The WD_BLACK SN7100 is a 4TB M.2 2280 PCIe 4.0 x4 NVMe SSD for gamers who want substantial game storage and fast transfers in a compatible desktop, laptop, or handheld gaming device; its listed sequential speeds are up to 7,000MB/s read and 6,700MB/s write.
Recommended For
- Gaming-laptop owners with a compatible M.2 2280 slot who want to add game storage while prioritizing low drive power use; reviewers found the SN7100 especially efficient, though its power-efficiency advantage is compared with the previous-generation SN770.
- Owners of handheld gaming PCs that accept an M.2 2280 drive and want room for a larger installed game library; CNET Korea tested the 4TB SN7100 in an ASUS ROG Ally X.
- PC gamers who want a 4TB internal drive for a large game collection and frequent installs or updates, and whose system supports PCIe NVMe M.2 2280; the 4TB model is rated for 2,400TBW.
Real-World Use Scenarios
- A gaming-laptop owner running short on space can replace or supplement a compatible M.2 2280 drive and keep more large games installed, reducing the need to uninstall titles between sessions.
- A desktop gamer adding a second internal drive can use the 4TB model for a larger game library; it provides room for more installed titles, though it should not be expected to increase frame rates.
- A laptop gamer who plays away from a desk can upgrade a compatible system with this M.2 2280 drive; its laptop-oriented design and tested power efficiency suit portable use, but battery-life gains will depend on the laptop and workload.
- A gamer moving a large game library or project files between drives can use the SN7100 for fast transfers; very long write jobs may slow after the drive's fast cache is used.
- A streamer or game creator recording gameplay or working with game-engine assets can keep active files on the internal SSD; the 4TB model's capacity and rated endurance support frequent writes, while sustained heavy workloads can perform differently from short transfers.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Gaming, multimedia, and personal use in laptops, desktops, or handheld gaming consoles |
| Capacity And Form Factor | 4TB internal SSD in an M.2 2280 form factor |
| Interface And Memory | PCIe 4.0 x4 with NVMe and TLC 3D NAND; uses HMB cache without DRAM |
| Read And Write Performance | Sequential speeds up to 7,000 MB/s read and 6,700 MB/s write; random performance up to 900,000 IOPS read and 1,350,000 IOPS write |
| Endurance And Reliability | Rated for up to 2,400TBW with a 1,750,000-hour MTBF |
| Power And Operating Conditions | Average active power 95mW, maximum operating power 4.5W, and sleep power 5mW; operating temperature 0°C to 85°C and storage temperature -40°C to 85°C |
| Shock And Vibration Resistance | Shock resistance up to 1,500G at 0.5ms; vibration resistance 5gRMS from 10–2,000Hz across 3 axes |
| Physical Specifications | 80 × 22 × 1.14mm and 5.8g; supplied without a heatsink |
| Model Identifiers | SanDisk WD_BLACK SN7100; model WDS400T4X0E-00CJA0, part number WDS400T4X0E |
Reference Q&A
Q: Is the 4TB WD_BLACK SN7100 worth choosing over the older SN770?
A: Choose the SN7100 for a newer drive with higher rated speeds and a 4TB option. SanDisk positions the SN7100 as up to 35% faster and up to 100% more power-efficient than the 1TB SN770; those are manufacturer comparisons, and actual performance depends on capacity and system. The SN770 may still suit buyers who find it at a lower price and need less storage.
Q: WD_BLACK SN7100 or SN850X for a desktop gaming PC?
A: Choose the SN7100 if lower power use and gaming storage are the priority. Consider the SN850X for a desktop handling heavier or more sustained storage workloads: it has onboard DRAM, while the SN7100 uses HMB, and Tom’s Hardware places the SN850X among the higher-performance, less-efficient drives. Both are PCIe 4.0 M.2 2280 SSDs, so check motherboard fit and cooling before buying.
Q: How does the 4TB SN7100 compare with the Samsung 990 EVO Plus 4TB?
A: Both are PCIe 4.0-compatible, M.2 2280 TLC SSDs with 4TB options. The SN7100 is rated for up to 7,000 MB/s read and 6,700 MB/s write; Samsung rates the 990 EVO Plus at up to 7,250 MB/s read and 6,300 MB/s write. Choose the SN7100 if its higher advertised sequential-write ceiling fits your needs; consider the Samsung if you prefer Samsung Magician software. Rated peak speeds alone do not establish which drive will be faster for every workload.
Q: Is the SN7100 a good fit for a laptop or gaming handheld compared with a desktop-focused SSD?
A: The SN7100 is a sensible option for a laptop or handheld that supports an M.2 2280 drive, especially when power efficiency and storage capacity matter. Tom’s Hardware testing identifies power efficiency as a key strength. Check the device’s required SSD length first: the SN7100 is 2280, so it will not directly fit a 2230-only slot. For a desktop with heavier sustained workloads, compare higher-tier drives such as the SN850X as well.
Q: Will this SSD work in my laptop or desktop?
A: It requires a compatible M.2 2280 slot that supports PCIe NVMe. Check your computer’s manual for slot support and whether it accepts a 4TB drive; the M.2 shape alone does not guarantee compatibility.
Q: Can I install this SSD in a PS5?
A: Its 4TB capacity, M.2 2280 size, and PCIe Gen4 x4 interface align with key PS5 M.2 expansion requirements. This model has no built-in heatsink, so add a compatible heat-dissipation solution and check the clearance and requirements for your PS5 model before installing.
Q: Does it come with a heatsink?
A: No. The 4TB SN7100 is listed without a heatsink. If your device requires one or does not provide M.2 cooling, you may need a compatible heatsink or other approved cooling solution.
Q: Who is this 4TB SSD suitable for?
A: It suits gamers and creators who need substantial internal storage and a fast PCIe Gen4 NVMe drive in a compatible computer or handheld device. The listed 4TB model reaches up to 7,000 MB/s sequential read and 6,700 MB/s sequential write; those are maximum specifications, and actual performance depends on the host device and workload. It uses HMB rather than onboard DRAM.
Q: Is the SN7100 a suitable replacement for a laptop’s only SSD?
A: It can suit a laptop with a compatible M.2 2280 NVMe slot. The drive is PCIe 4.0 x4, uses TLC NAND, and has no onboard DRAM but supports HMB. Check the laptop’s supported drive size and interface before buying.
Q: Is the SN7100 a good choice for gaming and everyday use, or do I need a DRAM SSD?
A: For gaming and everyday use, the SN7100’s DRAM-less HMB design may be suitable; community discussions describe DRAM as less important for these workloads. For frequent, large file transfers or other write-heavy work, consider a drive with onboard DRAM and stronger sustained-write performance. The 4TB model is rated for up to 2,400TBW.
Q: Will the SN7100 make games load faster than a SATA SSD or hard drive?
A: It is a PCIe 4.0 x4 NVMe drive, rated up to 7,000 MB/s sequential read and 6,700 MB/s write for this 4TB model. A YouTube test reports faster game-loading and asset-loading behavior than SATA SSDs and hard drives in its tested scenario; actual results vary by system and game.
Q: Is the SN7100 worth paying more for than a cheaper Gen 4 SSD?
A: That depends on the price difference and workload. Reddit discussions treat the SN7100 as a capable option for gaming and general use, but note that its benefits may not justify a large premium over another compatible Gen 4 drive. Compare current prices and prioritize capacity or sustained-write performance if those matter more to you.