Is the WD_BLACK SN8100 worth choosing over a PCIe 4.0 SSD?

Choose the SN8100 if your motherboard supports PCIe 5.0 and your work benefits from high sequential throughput, such as transferring large files or handling storage-intensive projects. A quality PCIe 4.0 drive, such as the SN850X, is a sensible choice when your system is Gen4-only or your main use is everyday computing and gaming. The SN8100 is backward-compatible, but a Gen4 slot will limit it to that interface’s speeds.

WD_BLACK SN8100 or Crucial T705 for large file transfers?

Choose the SN8100 if you want a PCIe 5.0 drive with a heatsink in this configuration and strong performance across mixed read/write and application-based tests. The Crucial T705 is also a fast Gen5 option, with its own high sequential-speed specifications; results vary by workload, and one review found it slightly ahead of the SN8100 in a sequential copy test. Compare the exact capacity, heatsink version, and current price before choosing.

Should I get the WD_BLACK SN8100 or Samsung 9100 PRO 4TB?

Both are high-end PCIe 5.0 drives with similar advertised sequential speeds. The SN8100 4TB is rated up to 14,900 MB/s read and 14,000 MB/s write and this listing includes a heatsink. The 9100 PRO 4TB is rated up to 14,800/13,400 MB/s; consider it if you prefer Samsung’s SSD software or its drive ecosystem. Choose based on the included heatsink, system fit, and the workloads you run rather than peak specifications alone.

WD_BLACK SN8100 4TB or SN850X 4TB for a gaming PC?

Choose the SN8100 if your system supports PCIe 5.0 and you also move large files or run storage-heavy workloads: its rated sequential speeds are up to 14,900/14,000 MB/s, compared with the SN850X’s PCIe 4.0 class. For a gaming-focused build where capacity and game loading matter more than maximum transfer speeds, the SN850X is a practical alternative; benchmark differences do not necessarily translate into equally noticeable everyday gaming gains.

Can I use this SSD in an external USB enclosure?

It is an internal M.2 2280 PCIe NVMe SSD, not a ready-to-use external drive. An enclosure must support the drive, and its connection and controller can limit performance; the listed PCIe 5.0 speeds require installation in a compatible internal slot.

Who is the WD_BLACK SN8100 4TB with heatsink suitable for?

It is suited to desktop users with a compatible M.2 2280 PCIe NVMe slot who need 4TB of fast storage for gaming, content creation, large data transfers, or other demanding workloads. Its listed peak sequential speeds are up to 14,900 MB/s read and 14,000 MB/s write; reaching those speeds requires a compatible PCIe 5.0 x4 system.

Will the heatsink fit under my motherboard’s M.2 cover?

Check the motherboard’s clearance before installation. This SSD has a pre-attached heatsink and is 11.25 mm high; it may not fit beneath every motherboard’s M.2 cover. Do not stack the motherboard cover over the SSD’s heatsink unless the motherboard and drive instructions allow it.

Will this SSD fit in a PS5?

The provided specifications identify it as an M.2 2280 internal SSD with a pre-attached heatsink, but do not confirm PS5 compatibility or fit. Check the console’s current M.2 requirements and heatsink clearance before buying; the drive’s dimensions are 80 × 22 × 11.25 mm.

Who benefits most from the SN8100’s Gen 5 speeds?

It is best suited to users who regularly handle large transfers or sustained, storage-intensive work, such as video editing. Its 4TB capacity and listed sequential speeds of up to 14,900 MB/s read and 14,000 MB/s write may be useful for those tasks; ordinary gaming and everyday use may not make the speed premium worthwhile.

Is the SN8100 worth buying mainly for gaming?

Usually not for gaming alone. Reddit discussions describe Gen 5 speed gains in game loading as small compared with cheaper drives. The SN8100 is a better fit if you also need 4TB of storage or regularly move large files and want PCIe 5.0 performance.

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WD_BLACK SN8100 NVMe SSD - 4TB, With Heatsink, M.2 2280 PCI-Express 5.0x4 Internal Solid State Drive (SSD), Up to 14900 MBps Read -WDS400T1XHM-00CMT0

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EXPERIENCE PCIe Gen 5: Drastically enhance your gaming and content creation experience with this PCIe Gen 5.0x4 NVMe M.2 SSD.
BLISTERING SPEEDS. IMMENSE CAPACITIES. Your drive reaches sequential read speeds up to an astonishing 14,900MB/s, sequential write speeds up to 14,000MB/s, and over 2,300,000 IOPS of random performance (2TB – 4TB models) and offers up to 8TB of capacity.
EXTENDED ELEVATED PERFORMANCE. With its custom heatsink, the WD_BLACK SN8100 SSD delivers up to 15x longer sustained performance under heavy workloads compared to the non-heatsink version.
SPEED MEETS RELIABILITY. Enjoy heightened speed and reliability with up to 4,800 TBW (8TB model) endurance and our latest TLC 3D CBA NAND technology.
CUSTOM WD_BLACK HEATSINK. The custom WD_BLACK heatsink is the lowest profile option on a PCIe 5.0 drive with RGB lighting. Made from anodized aluminum, it delivers silent, fanless cooling and customizable lighting to match your build.
POWERED BY SANDISK: The WD_BLACK, WD Blue, and WD Green flash products are manufactured by Sandisk Technologies, Inc. or its affiliates and distributed under license from Western Digital Corporation.

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

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Experience The Breakneck Speed of PCIe Gen 5

Enhance your gaming and content creation experience with the speed of PCIe Gen 5.0x4 NVMe M.2 SSD technology — perfect for gaming, content creation, and loading models for AI-powered applications.

Speed Meets Reliability

Up to 4800 TBW⁽³⁾(8TB⁽¹⁾ model) endurance and our latest TLC 3D CBA NAND deliver speed and reliability to handle intense gaming, video editing, live streaming, and AI workloads.

An Industry-leader for PCIe Gen 5 Power Efficiency

Enjoy astonishing performance without added stress to your system with 100%+ more power efficiency (1TB – 4TB⁽¹⁾ models) than our PCIe Gen4⁽⁴⁾ SSD at an average power draw of 7.5W⁽²⁾ or less.

Award-winning Performance

Don’t take our word for it - leading reviewers in the storage industry have named the WD_BLACK SN8100 SSD as one of the fastest, most powerful, and most efficient SSDs on the planet⁽⁷⁾.

Blistering Speeds for Intense Tasks

The WD_BLACK SN8100 SSD reaches sequential read speeds up to 14,900MB/s⁽²⁾, sequential write speeds up to 14,000MB/s⁽²⁾(2TB-4TB⁽¹⁾), and over 2,300,000 IOPS⁽²⁾ of random performance (2TB-4TB⁽¹⁾).

You Can Do More with SANDISK Software

Monitor drive health, update firmware, and enable Game Mode on SANDISK Dashboard⁽⁵⁾(Windows only). Migrate data with Acronis True Image for Sandisk⁽⁶⁾.

Room for Revolution

Hold your biggest projects and still have room for your updates, training datasets and models for AI-powered applications, your media and game libraries thanks to immense capacities up to 8TB⁽¹⁾.

Notes:

(1) 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.

(2) 1MB/s = 1 million bytes per second. IOPS = input/output operations per second. Based on internal testing; performance may vary depending upon host device, usage conditions, drive capacity, and other factors.

(3) Projected values. TBW (terabytes written) values calculated using JEDEC client workload (JESD219) and vary by product capacity.

(4) Over 100% more power efficient than 1TB, 2TB, and 4TB WD_BLACK SN850X NVMe SSDs.

(5) Available for download; see the official Sandisk website for more details.

(6) Download and installation required. Includes 5-year license for your compatible drive. Redeem within 90 days of purchase. May not be combined with other offers. See official Sandisk website for more details. Offer subject to change.

(7) Rated 94/100 by PCGamer - 2025 Editor's Pick. Rated 4.5 Stars out of 5 by The SSD Review - 2025 Editor's Choice. Rated 4.5 Stars out of 5 by Toms Hardware - 2025 Editor's Choice. Rated 100% by TweakTown - 2025 Editor's Choice Award. Awarded 'Best of 2025' by Storage Review, May 25th 2025.

SANDISK and the SANDISK logo are registered marks or marks of the Sandisk Corporation or its affiliates in the U.S. and/or other countries. The NVMe word mark is a mark of NVM Express, Inc. PCIe is a registered mark of PCI-SIG. Windows and Microsoft are registered marks of the Microsoft group of companies. All other marks are the property of their respective owners. Product specifications subject to change without notice. Pictures shown may vary from actual products.

Overview

The WD_BLACK SN8100 4TB NVMe SSD is a consumer internal solid state drive for gaming, content creation, video editing, live streaming, and AI-powered applications. Its PCI-Express 5.0 x4 interface, high sequential speeds, and included heatsink support demanding storage workloads.

Key Features

PCI-Express 5.0 x4 NVMe M.2 storage
4TB capacity for projects, media, games, updates, and training datasets
Custom WD_BLACK heatsink with silent, fanless cooling and customizable RGB lighting
TLC 3D CBA NAND technology

Performance

Sequential performance reaches up to 14900 MB/s read and 14000 MB/s write. Random performance reaches up to 2,300,000 IOPS for 4KB random read and up to 2,400,000 IOPS for 4KB random write. Active power consumption is 6.5W during read and 7.0W during write.

Design

The M.2 2280 internal SSD measures 80mm wide, 22mm deep, and 11.25mm high, with a listed weight of 31.2g. The included custom heatsink is made from anodized aluminum and provides silent, fanless cooling with customizable RGB lighting.

Connectivity & Compatibility

This internal SSD uses the M.2 2280 form factor, a PCI-Express 5.0 x4 interface, and the NVMe protocol.

Reliability & Durability

The drive has a listed endurance of 2400TBW and an MTTF of 1,750,000 hours. Operating temperature is 32°F to 185°F (0°C to 85°C), while storage temperature is -40°F to 185°F (-40°C to 85°C). Maximum shock resistance is 1,500G @0.5 ms half sine. Operating vibration is 5 gRMS at 10-2000 Hz across 3 axes, and non-operating vibration is 4.9 gRMS at 7-800 Hz across 3 axes.

Software & Tools

SANDISK Dashboard for Windows enables drive health monitoring, firmware updates, and Game Mode. Acronis True Image for Sandisk supports data migration and requires download and installation.

Specifications

Brand: Western Digital
Model: WDS400T1XHM-00CMT0
Device Type: Internal Solid State Drive (SSD)
Capacity: 4TB
Form Factor: M.2 2280
Interface: PCI-Express 5.0 x4
Protocol: NVMe
Cache: No DRAM (SLC)
Max Sequential Read: Up to 14900 MBps
Max Sequential Write: Up to 14000 MBps
4KB Random Read: Up to 2,300,000 IOPS
4KB Random Write: Up to 2,400,000 IOPS
Terabytes Written (TBW): 2400TB
MTTF: 1,750,000 Hours
HeatSink: with HeatSink
Power Consumption (Idle): Sleep (PS4): 5 mW
Power Consumption (Active): 6.5W Read / 7.0W Write

Model
Brand	Western Digital
Model	WDS400T1XHM-00CMT0
Device Type	Internal Solid State Drive (SSD)
Used For	Consumer

Details
Form Factor	M.2 2280
Capacity	4TB
Interface	PCI-Express 5.0 x4
Protocol	NVMe
Cache	No DRAM (SLC)

Performance
Max Sequential Read	Up to 14900 MBps
Max Sequential Write	Up to 14000 MBps
4KB Random Read	Up to 2,300,000 IOPS
4KB Random Write	Up to 2,400,000 IOPS
Terabytes Written (TBW)	2400TB
MTTF	1,750,000 Hours
HeatSink	with HeatSink

Features
Features	Experience the breakneck speed of PCIe Gen 5 Drastically enhance your gaming and content creation experience with the speed of PCIe Gen 5.0x4 NVMe M.2 SSD technology - perfect for gaming, content creation, and loading models for AI-powered applications. Blistering speeds for intense tasks With the help of our nCache 4.0 feature, the WD_BLACK SN8100 SSD reaches sequential read speeds up to an astonishing 14,900MB/s, sequential write speeds up to 14,000MB/s, and over 2,300,000 IOPS of random performance (2TB-4TB models). Designed to perform Our latest TLC 3D CBA NAND technology provides our most advanced combination of speed and reliability to ensure your experience is at top performance, no matter if you’re gaming or working. An industry-leader for PCIe Gen 5 power efficiency Enjoy over 100% more power efficiency than our PCIe Gen4 drive and simplify your system design without adding expensive cooling. Plus, an average operating power of 7W or under helps keep your drive running at optimal performance. Endurance for every workload With up to 2,400 TBW (4TB model) endurance, your machine can handle even the most intense tasks, such as gaming, caching, video editing, and AI workloads. Room for revolution Hold your biggest projects and still have room for OS updates, models for AI-powered applications, large datasets, and your game library thanks to immense capacities up to 4TB. And with the latest security features like TCG Opal, you can help protect and encrypt your sensitive data.

Environmental
Power Consumption (Idle)	Sleep (PS4): 5 mW
Power Consumption (Active)	6.5W Read / 7.0W Write
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	Operating Vibration: 5 gRMS, 10-2000 Hz, 3 axes Non-operating Vibration: 4.9 gRMS, 7-800 Hz, 3 axes

Dimensions & Weight
Height	11.25mm
Width	80mm
Depth	22mm
Weight	31.2g

Additional Information
First Listed on Newegg	June 11, 2026

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