WD Ultrastar 4TB 7200 RPM vs WD 4TB My Passport Portable: Spec Comparison
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This comparison covers the wd western digital ultrastar DC vs 4tb my passport. Both drives offer 4TB of storage space for your data. The main difference lies in their intended use and connectivity. The Ultrastar is an internal enterprise drive built for servers. The My Passport is a portable external drive designed for personal backup. You need to choose based on whether you require internal installation or plug-and-play portability.
Key differences
| Aspect | WD Ultrastar 4TB 7200 RPM Hard Drive | WD 4TB My Passport Portable Hard Drive |
|---|---|---|
| Rotational Speed | 7200 RPM | not listed |
| Form Factor | 3.5 Inch | Portable (2.95 x 4.22 x 0.75 inches) |
| Hardware Interface | SATA 6.0Gb/s | USB 3.1/USB 3.0 |
| Cache Size | 64MB | not listed |
| Weight | 1.83 pounds | 7.41 ounces |
Which one should you choose?
Choose WD Ultrastar 4TB 7200 RPM Hard Drive if
- You need an internal drive for a server or NAS system
- You require 7200 RPM performance for continuous operation
- You want a drive with 64MB cache for better throughput
Choose WD 4TB My Passport Portable Hard Drive if
- You need a portable drive for easy transport
- You want to connect via USB without opening your case
- You prefer a lightweight design under one pound
Verdict: Choose the WD Ultrastar if you are building or upgrading a desktop, server, or NAS. It provides the internal interface and rotational speed needed for consistent performance. Pick the WD My Passport if you simply need to store and carry files on a USB connection.
Ultrastar vs My Passport Specs
Rotational Speed
The WD Ultrastar 4TB 7200 RPM Hard Drive spins at 7200 RPM. This high speed supports fast data transfer and reliable throughput for servers. The WD 4TB My Passport Portable Hard Drive does not list its rotational speed in the provided data. Generally, portable drives often spin slower or use different technologies to save power. The Ultrastar’s 7200 RPM makes it better for demanding, continuous workloads. You get faster access times with the enterprise drive. The portable drive’s speed is unknown from the specs. For heavy business-critical applications, the Ultrastar offers a clear performance advantage. The My Passport is designed for portability rather than raw speed.
Form Factor
The WD Ultrastar 4TB 7200 RPM Hard Drive uses a 3.5-inch form factor. It is an internal drive designed for desktops, servers, and NAS systems. The WD 4TB My Passport Portable Hard Drive is a portable external drive. It features a slim, durable design meant to be carried with you. The Ultrastar measures 5.8 inches in length and weighs 1.83 pounds. The My Passport is much smaller at 4.22 inches long and weighs only 7.41 ounces. If you need to install the drive inside a computer or rack, the Ultrastar is the only choice. If you need to move files between computers on the go, the My Passport is the practical option. They serve different physical needs.
Hardware Interface
The WD Ultrastar 4TB 7200 RPM Hard Drive uses a SATA 6.0Gb/s interface. This is the standard connection for internal storage devices. It connects directly to a motherboard or RAID controller. The WD 4TB My Passport Portable Hard Drive uses USB 3.1/USB 3.0. This allows you to plug it into any computer with a USB port. The Ultrastar requires internal mounting and a SATA cable. The My Passport is plug-and-play via USB. For internal server builds, the SATA interface on the Ultrastar is necessary. For external backup or file transfer, the USB interface on the My Passport is essential. Each interface matches its intended installation method perfectly.
Cache Size
The WD Ultrastar 4TB 7200 RPM Hard Drive includes 64MB of cache. This cache helps buffer data and improves performance during heavy read/write workloads. The WD 4TB My Passport Portable Hard Drive does not list its cache size in the provided data. Cache memory is crucial for maintaining system stability and data integrity in demanding environments. The 64MB cache on the Ultrastar supports its enterprise-class performance. Without the cache specification for the My Passport, we cannot compare buffer speeds directly. However, the Ultrastar’s known cache size supports its design for continuous 24/7 operation. The portable drive likely has less cache to prioritize power efficiency. The Ultrastar has the advantage here due to verified specs.
Build and Reliability
The WD Ultrastar 4TB 7200 RPM Hard Drive is built for 24/7 operation. It features advanced vibration protection and error recovery technology. It supports heavy workloads for business-critical applications in data centers. The WD 4TB My Passport Portable Hard Drive has a slim durable design. It focuses on protecting files against ransomware and includes password protection. The Ultrastar is built for physical endurance in servers. The My Passport is built for physical durability during transport. The Ultrastar handles higher workloads and vibration. The My Passport handles drops and travel better. Choose the Ultrastar for server reliability. Choose the My Passport for portable security.
Choose the Right WD Drive for You
Server administrators needing continuous uptime
The Ultrastar features a 7200 RPM rotational speed and SATA 6.0Gb/s interface, ensuring fast data transfer for demanding environments. Its 64MB cache and 3.5-inch form factor support heavy read/write workloads. This drive is built for 24/7 operation in data centers and RAID systems, providing the reliability you need for business-critical applications.
Users wanting portable storage with encryption
The My Passport offers USB 3.1/USB 3.0 connectivity for easy plug-and-play use. It includes password protection and hardware encryption to secure your files. The slim, durable design weighs only 7.41 ounces, making it ideal for carrying important documents, photos, and videos. It also comes with backup software featuring ransomware defense for added peace of mind.
Home users building a desktop NAS
For a desktop NAS build, the Ultrastar's 3.5-inch size and SATA interface fit standard drive bays. Its enterprise-class performance handles multiple simultaneous connections better than portable drives. The advanced vibration protection helps maintain data integrity when installed in multi-drive arrays, ensuring stable operation for your home media library or personal cloud storage needs.
The products compared
WD Ultrastar 4TB 7200 RPM Hard Drive
Best for: internal server and NAS storage needs
- Storage Capacity
- 4 TB
- Form Factor
- 3.5 Inch
- Hardware Interface
- SATA 6.0Gb/s
- Rotational Speed
- 7200 RPM
- Cache Size
- 64MB
- Dimensions
- 5.8 × 4 × 1 inches
View on Amazon: WD Ultrastar 4TB 7200 RPM Hard Drive Affiliate link
The WD Ultrastar 4TB is an enterprise-class 3.5-inch internal drive designed for continuous 24/7 operation in servers and NAS systems. It features a 7200 RPM rotational speed and SATA 6.0Gb/s interface for reliable throughput. With 64MB cache and advanced vibration protection, it handles heavy workloads. This drive suits users building desktops, RAID arrays, or surveillance storage who need durability over portability.
Pros
- 7200 RPM rotational speed for fast data transfer
- SATA 6.0Gb/s interface ensures reliable connectivity
- Built for 24/7 continuous operation in demanding environments
- Advanced vibration protection maintains data integrity
Cons
- Requires 3.5-inch drive bay and internal mounting
- Not portable; lacks external casing or USB interface
- Heavier at 1.83 pounds compared to portable drives
Good fit if
- You are building a desktop PC or NAS
- You need a drive for 24/7 server operation
- You require high workload capacity for RAID arrays
Skip if
- You need a portable drive for travel
- You only have space for 2.5-inch internal drives
- You want a plug-and-play external USB solution
Verdict: WD Ultrastar 4TB 7200 RPM Internal Drive is a robust internal storage solution for users who prioritize enterprise-grade reliability and continuous operation over portability.
WD 4TB My Passport Portable Hard Drive
Best for: mobile data security and portability
- Storage Capacity
- 4TB
- Hardware Interface
- USB 3.1/USB 3.0
- Dimensions
- 4.22 × 2.95 × 0.75 inches
- Weight
- 7.41 ounces
View on Amazon: WD 4TB My Passport Portable Hard Drive Affiliate link
The WD 4TB My Passport is a portable external drive with USB 3.0 connectivity. It measures 2.95 by 4.22 by 0.75 inches and weighs 7.41 ounces. The drive includes password protection and hardware encryption. It also features backup software with ransomware defense. This compact unit suits users who need secure, on-the-go storage for photos and documents.
Pros
- 4TB storage capacity
- USB 3.0 interface
- Hardware encryption support
- Compact 0.75-inch height
- Includes ransomware defense software
Cons
- USB 3.0 is slower than USB 3.1 Gen 2
- No mention of 7200 RPM internal speed
- 3-year warranty is shorter than enterprise standards
Good fit if
- You need portable storage for travel
- You want built-in security features
- You prioritize compact size over speed
Skip if
- You require high-performance NAS speeds
- You need 24/7 enterprise reliability
- You prefer internal drive installation
Verdict: WD 4TB My Passport Portable is a secure, compact drive for mobile users. It fits those who value portability and basic encryption over raw performance.
Specifications side by side
| Spec | WD Ultrastar 4TB 7200 RPM Hard Drive | WD 4TB My Passport Portable Hard Drive |
|---|---|---|
| Storage Capacity | 4 TB | 4TB |
| Form Factor | 3.5 Inch | not stated |
| Hardware Interface | SATA 6.0Gb/s | USB 3.1/USB 3.0 |
| Rotational Speed | 7200 RPM | not stated |
| Cache Size | 64MB | not stated |
| Size | 4 TB | 4TB |
| Dimensions | 5.8 × 4 × 1 inches | 4.22 × 2.95 × 0.75 inches |
| Weight | 1.83 pounds | 7.41 ounces |
| Model | HUS726T4TALE6L4/CR | WDBPKJ0040BBK-WESN |
| Color | not stated | Black |
Frequently asked questions
Can I use the WD Ultrastar 4TB as a portable external drive?
No. The WD Ultrastar 4TB 7200 RPM is a 3.5-inch internal drive. It uses a SATA interface and requires a separate enclosure or server chassis to function externally. In contrast, the WD My Passport Portable includes a built-in USB 3.0 connection and a compact shell designed for mobile use.
Which drive has a larger cache for better performance?
The WD Ultrastar 4TB 7200 RPM has a 64MB cache. This larger buffer helps manage data flow for server and NAS environments. The WD 4TB My Passport Portable does not list a specific cache size in its published specifications, so you cannot compare this metric directly.
How much space does the WD Ultrastar drive occupy in a case?
The WD Ultrastar 4TB 7200 RPM is a 3.5-inch form factor drive. Its dimensions are 5.8 inches in length, 4 inches in width, and 1 inch in height. You need a standard 3.5-inch drive bay or an external enclosure that supports this larger physical size.
Is the My Passport drive heavier than the Ultrastar?
No. The WD 4TB My Passport Portable weighs 7.41 ounces. The WD Ultrastar 4TB 7200 RPM weighs 1.83 pounds. The Ultrastar is significantly heavier due to its internal metal construction and larger 3.5-inch platters, making it unsuitable for pocket or bag transport without a robust case.
Do both drives use the same connection type?
No. The WD Ultrastar 4TB 7200 RPM uses a SATA hardware interface for direct connection to motherboards or NAS units. The WD 4TB My Passport Portable uses a USB 3.0 interface, allowing you to plug it directly into a computer or laptop without additional cables or adapters.
Which model is better for a home server setup?
The WD Ultrastar 4TB 7200 RPM is better for a home server. It features a 7200 RPM rotational speed and a 3.5-inch form factor, which are standard for internal server storage. The My Passport Portable is designed for mobile data security and portability, not for continuous internal operation.