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WD_BLACK SN7100 M.2 2280 4TB PCI-Express PCIe 4.0 Internal Solid State Drive (SSD) WDBELG0040BBK-WRSN
- High Octane Gaming SSD That Doesn't Back Down
- Built with Leading Edge Tech
- More Space for Favorites and New Titles
- Clear That Checkpoint Before Your Battery Clocks Out
- Do More with WD_Black Dashboard
- Endurance for Intense Workloads
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Specs
Reviews
Learn more about the SanDisk WDBELG0040BBK-WRSN
| Best Seller Ranking | #10 in Internal SSDs |
|---|
| Brand | SanDisk |
|---|---|
| Series | WD_Black |
| Model | WDBELG0040BBK-WRSN |
| Device Type | Internal Solid State Drive (SSD) |
| Used For | Consumer |
| Form Factor | M.2 2280 |
|---|---|
| Capacity | 4TB |
| Memory Components | 3D NAND TLC |
| Interface | PCI-Express 4.0 x4 |
| Protocol | NVMe |
| Cache | No DRAM (HMB) |
| Max Sequential Read | Up to 7000 MBps |
|---|---|
| Max Sequential Write | Up to 6700 MBps |
| 4KB Random Read | Up to 900,000 IOPS |
| 4KB Random Write | Up to 1,350,000 IOPS |
| Terabytes Written (TBW) | 1200TB |
| Power Consumption (Idle) | Sleep (PS4): 5mW |
|---|---|
| Power Consumption (Active) | Average Active Power: 95mW Maximum Operating Power: 4.5W |
| Operating Temperature | 32°F to 185°F (0°C to 85°C) |
| Storage Temperature | -40°F to 185°F (-40°C to 85°C) |
| Max Shock Resistance | 1,500G @0.5 ms half sine |
| Max Vibration Resistance | 5 gRMS, 10-2000 Hz, 3 axes |
| Height | 1.14mm |
|---|---|
| Width | 22mm |
| Depth | 80mm |
| Weight | 5.8g |
| First Listed on Newegg | September 18, 2026 |
|---|
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 3 years
- Limited Warranty period (labor): 3 years
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.ca's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-866-726-3475
- Support Website
- View other products from SanDisk
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The WD_BLACK SN7100 is a 4TB M.2 2280 NVMe SSD for gamers and PC users who want substantial storage and fast PCIe 4.0 performance, with sequential read speeds up to 7,000 MB/s and write speeds up to 6,700 MB/s. It suits systems with a compatible M.2 2280 PCIe 4.0 x4 slot.
Recommended For
- PC gamers with a compatible M.2 2280 PCIe 4.0 slot who want room for a large game library, updates, and downloadable content on one drive.
- Laptop gamers with a compatible M.2 2280 slot who want to expand storage for games while prioritizing an SSD designed with power efficiency in mind.
- Desktop PC gamers adding a fast secondary drive for game installs and everyday use, rather than paying extra for a flagship drive aimed at peak performance.
- PS5 owners seeking more game storage who can confirm the console’s fit requirements and add a compatible heatsink, since this drive is M.2 2280 and has no heatsink model.
Real-World Use Scenarios
- A laptop gamer with a compatible M.2 2280 slot can add the SN7100 as a game-library drive, keeping more large titles installed and reducing how often they need to uninstall games to make room for new releases and updates.
- A desktop PC gamer can use the 4TB drive to keep a large collection of games on one internal SSD and play directly from it; reviews found gaming performance responsive, while upgrades from an already-fast PCIe 4.0 SSD are unlikely to produce a dramatic change in load times.
- Someone replacing a hard drive or older, slower SSD in a gaming laptop can use the SN7100 for the operating system, apps, and games; everyday launches and loading should feel more responsive, provided the laptop supports an M.2 2280 NVMe drive.
- A portable gaming system or handheld with a compatible M.2 2280 slot can use the SN7100 to carry more games internally; check the device’s supported SSD size and installation requirements first, since not every handheld accepts a 2280 drive.
- A gamer who records gameplay or saves speedrun captures can keep game files and recent recordings on the same high-capacity drive; for very large file-copy jobs, transfer speeds can vary rather than staying at peak burst performance.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Consumer gaming PCs needing high-capacity internal M.2 NVMe storage |
| Capacity And Configuration | 4TB M.2 2280 SSD with 3D NAND TLC and no DRAM (HMB) |
| Interface And Protocol | PCIe 4.0 x4 with NVMe |
| Read And Write Performance | Sequential speeds up to 7,000 MB/s read and 6,700 MB/s write; 4KB random performance up to 900,000 IOPS read and 1,350,000 IOPS write |
| Endurance | Rated for 1,200TB written |
| Power And Operating Conditions | 5mW sleep power, 95mW average active power, and 4.5W maximum operating power; 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 0.5 ms half sine; vibration resistance of 5 gRMS, 10–2,000 Hz, 3 axes |
| Dimensions And Weight | 80 × 22 × 1.14 mm; weighs 5.8 g |
| Model Identifiers | SanDisk WD_BLACK SN7100, model WDBELG0040BBK-WRSN |
Reference Q&A
Q: WD_BLACK SN7100 vs. SN850X for a 4TB gaming drive—which should I choose?
A: Choose the SN7100 if you want 4TB of PCIe 4.0 storage with a DRAM-less, power-efficient design for gaming and everyday use. Choose the SN850X if your workloads more often involve large, sustained file writes and you prefer a drive with dedicated DRAM. For typical game storage, the SN7100’s 4TB capacity and rated speeds up to 7,000 MB/s read and 6,700 MB/s write make it a practical fit; the SN850X’s advantage is more relevant to sustained-write-heavy workloads.
Q: Is the 4TB SN7100 worth choosing over the 2TB version?
A: Choose the 4TB SN7100 if you want more room for a large game library, recordings, or other files without adding another drive. Choose the 2TB version if that capacity is enough and you want its higher rated peak speeds: up to 7,250 MB/s read and 6,900 MB/s write, versus 7,000 MB/s and 6,700 MB/s for the 4TB model. Both use PCIe 4.0 x4 NVMe and TLC NAND.
Q: Should I upgrade from a WD_BLACK SN770 to the SN7100?
A: The SN7100 is the stronger choice when buying a new drive or when you need more capacity: it is the SN770’s successor, and SanDisk claims up to 35% better performance than the 1TB SN770. If your current SN770 has enough space and works well for your gaming and everyday tasks, the SN7100’s higher rated performance alone may not make an upgrade worthwhile.
Q: Will this SSD fit and work in my laptop or handheld gaming device?
A: It can work in a device with an available M.2 2280 NVMe slot that supports PCIe storage, but check the device’s specifications for 4TB capacity support and physical clearance before buying. The drive uses PCIe 4.0 x4; actual speeds depend on the host device.
Q: Is this 4TB SSD suitable for gaming and storing large files?
A: Yes. Its 4TB capacity is suited to keeping many games and large files on one internal drive. It is an M.2 2280 PCIe 4.0 x4 NVMe SSD, with listed sequential speeds up to 7,000 MB/s read and 6,700 MB/s write; realized performance depends on the computer or handheld it is installed in.
Q: Does this SSD need a heatsink?
A: The listed drive is sold without a heatsink. Whether you need additional cooling depends on the device and its M.2 cooling setup; check the host device’s installation guidance and ensure the SSD can make proper contact with its thermal pad or heatsink, if one is required.
Q: Who is this SSD best suited for?
A: It is suited to PC or handheld users who have a compatible M.2 2280 NVMe slot and want up to 4TB of internal storage for games, media, or work files. Its PCIe 4.0 interface and high listed sequential speeds are most useful in a host system that supports PCIe 4.0.
Q: Is the SN7100 a better fit for game storage than as a primary OS drive?
A: It may suit a game library or secondary storage well: it offers 4TB capacity and uses HMB rather than onboard DRAM. Reddit commenters distinguish it from DRAM-equipped drives they prefer for a primary OS drive, so consider a different model if onboard DRAM is a priority.
Q: Will the 4TB SN7100 work in a laptop or handheld gaming PC?
A: It requires a compatible M.2 2280 slot that supports NVMe over PCIe. Check the device’s specifications for slot size, interface, and capacity support before buying; the Reddit discussion about a Legion Go upgrade does not establish compatibility with every handheld.
Q: Is the 4TB SN7100 worth buying?
A: It is worth considering if you need 4TB of internal storage and your system supports an M.2 2280 PCIe 4.0 NVMe drive. Value depends on the price you find; the Reddit discussions compare prices, but the product details provided here do not include a current price.