3 Best Western Digital 4TB Nvme SSDs, Compared

Quick picks

The best fit for you

• You need secure portable data transfer Western Digital My Passport 4TB Portable NVMe SSD It features USB-C connectivity for high-speed external storage.
• You want the best budget NAS drive Western Digital WD Red SN700 4TB NAS NVMe SSD It uses an M.2 2280 form factor for direct NAS compatibility.
• You need large SATA storage for a desktop WD Blue 4TB 2.5-inch SATA SSD It provides a 2.5-inch SATA III interface for standard systems.

Our 3 picks

1 Best overall

Western Digital My Passport 4TB Portable NVMe SSD

Best for: secure portable data transfer

Size

4TB (what this guide is about)

Storage Capacity

4TB

Interface

USB 3.2 Gen-2

Form Factor

External Portable

Max Read Speed

1050MB/s

Max Write Speed

1000MB/s

View on Amazon: Western Digital My Passport 4TB Portable NVMe SSD Affiliate link

This is a portable external NVMe SSD with 4TB of storage. It connects via USB 3.2 Gen-2 and delivers read speeds up to 1,050 MB/s. The drive includes 256-bit AES hardware encryption for security. It is built to withstand drops up to 6.5 feet. You get a 5-year manufacturer warranty. This unit suits users who need high-capacity, fast, and secure portable storage for large files.

Pros

• Read speeds up to 1,050 MB/s
• 256-bit AES hardware encryption
• Drop resistant up to 6.5 feet
• 5-year manufacturer warranty

Cons

• External form factor requires a cable
• USB interface adds latency compared to internal NVMe
• Limited to USB-C or USB-A connections

Good fit if

• You need 4TB of portable storage
• You require hardware encryption for data security
• You want fast transfer speeds for large files

Skip if

• You need an internal M.2 drive for a desktop
• You require Thunderbolt 3 or 4 connectivity
• You want a drive without external cables

Verdict: Western Digital 4TB My Passport SSD offers high-speed portable storage with strong security features. It is ideal for professionals who need to move large datasets securely between locations.

2 Best premium

Western Digital WD Red SN700 4TB NAS NVMe SSD

Best for: NAS systems needing 4TB capacity

Size

4TB (what this guide is about)

Storage Capacity

4TB

Interface

Gen3 PCIe

Max Read Speed

Up to 3,400 MB/s

Form Factor

M.2 2280

Compatibility

NAS

View on Amazon: Western Digital WD Red SN700 4TB NAS NVMe SSD Affiliate link

This is a 4TB WD Red SN700 NVMe SSD designed for NAS devices. It uses a Gen3 PCIe interface and reaches read speeds up to 3,400 MB/s. The M.2 2280 form factor fits standard drives. It handles virtualization and collaborative editing well. You should choose this if you need reliable storage for multiple users in a network environment.

Pros

• 4TB storage capacity
• Up to 3,400 MB/s read speed
• Optimized for NAS compatibility
• M.2 2280 form factor

Cons

• Limited to Gen3 PCIe interface
• No included software suite mentioned
• NAS-focused rather than gaming optimized

Good fit if

• You are building or expanding a NAS system
• You need reliable storage for collaborative editing
• You want a 4TB internal drive for network use

Skip if

• You require Gen4 or Gen5 PCIe speeds
• You are installing a desktop gaming PC
• You need an external portable drive

Verdict: WD Red SN700 4TB NVMe SSD is a solid choice for NAS users who need high capacity and reliable performance. It fits your needs if you prioritize network compatibility over raw gaming speed.

3 Best budget

WD Blue 4TB 2.5-inch SATA SSD

Best for: desktop PCs needing large SATA storage

Size

4TB (what this guide is about)

Storage Capacity

4TB

Interface

SATA III

Form Factor

2.5-inch

Max Read Speed

Up to 560 MB/s

Max Write Speed

Up to 520 MB/s

View on Amazon: WD Blue 4TB 2.5-inch SATA SSD Affiliate link

The Western Digital WD Blue SA510 is a 4TB internal drive using the SATA III interface. It features a 2.5-inch form factor with a 7mm height. Sequential read speeds reach 560 MB/s, while write speeds hit 520 MB/s. This model suits users needing high storage capacity for legacy systems or desktops that do not support NVMe connections. It provides reliable performance for general computing tasks.

Pros

• 4TB storage capacity
• SATA III interface
• Up to 560 MB/s read speed
• Compact 2.5-inch form factor

Cons

• SATA III limits speeds below NVMe standards
• No hardware encryption listed in specs
• Heavier than M.2 NVMe drives

Good fit if

• You need 4TB of storage for a desktop PC
• Your motherboard only supports SATA connections
• You want a reliable internal drive for bulk storage

Skip if

• You require NVMe speeds for gaming or video editing
• You are building a small form factor PC
• You need an external portable drive

Verdict: WD Blue 4TB 2.5-inch SATA SSD fits users upgrading older desktops with large internal storage needs. It offers ample space and standard SATA performance without the premium cost of NVMe technology.

Specifications side by side

Check interface and form factor first

1. Match the physical shape

   You must verify the drive fits your device's slot. The WD Red SN700 uses an M.2 2280 form factor, measuring 3.15 inches long. This standard shape fits most desktop motherboards and many NAS systems. In contrast, the WD Blue is a 2.5-inch block. It requires a specific internal bay or an external enclosure. The My Passport is a portable unit with a USB-C connection. It does not plug directly into a motherboard. You need to check your hardware slots before buying.

2. Select the correct connection

   Your device determines the required interface. The My Passport uses a USB-C host interface for external use. This suits professionals moving data between locations. The WD Red SN700 uses an NVMe interface. It connects directly to PCIe lanes for high speed. The WD Blue uses a SATA III interface. This is for older desktops or systems without M.2 slots. You cannot use a USB drive as an internal boot drive. You cannot use an NVMe drive in a SATA slot. Match the port exactly.

3. Verify NAS compatibility

   If you are building a network storage system, check for specific compatibility badges. The WD Red SN700 is marked for NAS systems. This indicates it is optimized for continuous operation in a network environment. Standard gaming drives may overheat or throttle in a NAS. The My Passport is for portable use, not permanent network installation. The WD Blue is for desktop PCs. It lacks the specific optimizations for 24/7 network access. Choose the Red model if your primary goal is network storage reliability.

4. Consider security needs

   Portable drives often include hardware encryption. The My Passport is highlighted for secure data transfer. This suggests it includes built-in security features for sensitive files. Internal drives like the WD Red and WD Blue focus on raw performance and capacity. They may not include hardware encryption by default. If you transport large datasets, the portable option offers an extra layer of protection. Check the product specifications for AES encryption details. Security is a key differentiator for external storage solutions.

5. Check physical dimensions

   Size matters for fitment. The My Passport measures 3.5 inches in length. It is larger than standard internal drives. The WD Red SN700 is only 0.09 inches high. This thin profile fits easily into slim laptops or tight server racks. The WD Blue is thicker at 0.28 inches. It requires more vertical space in a desktop case. Measure your available space before purchasing. A drive that is too thick may not close your case. A drive that is too long may block other components.

Frequently asked questions

See also

• best western digital 1TB nvme SSDs
• best western digital 2TB nvme SSDs
• best western digital 4TB NAS hard drives
• best gaming desktops with 4TB SSD