400MB/s vs 150MB/s USB Flash Drives: Which Should You Buy?
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Choosing between a 400mbs vs 150mbs USB flash drive depends on your transfer needs. Both options offer metal casings for durability and support modern USB standards. The main difference lies in read speed. One drive delivers up to 400MB/s, while the other tops out at 150MB/s. This gap affects how quickly you move large files. You also need to consider storage capacity and extra features like encryption. These factors determine which drive fits your workflow better.
Key differences
| Aspect | Samsung BAR Plus 128GB USB 3.1 Flash Drive | SanDisk 64GB Ultra Flair USB-A Drive |
|---|---|---|
| Read Speed | 400MB/s | 150MB/s |
| USB Version | USB 3.1 | USB 3.0 |
| Storage Capacity | 128GB | 64GB |
| Security | not listed | 128-bit AES encryption |
Which one should you choose?
Choose Samsung BAR Plus 128GB USB 3.1 Flash Drive if
- You need faster read speeds for large video files.
- You want double the storage capacity for more data.
- You prefer a rugged metal design with a keyring.
Choose SanDisk 64GB Ultra Flair USB-A Drive if
- You require built-in password protection for private files.
- You want a lower cost option for basic transfers.
- You need a compact drive with a sleek metal casing.
Verdict: The Samsung drive suits users who prioritize speed and capacity for heavy media files. The SanDisk drive is better for those who need password protection for sensitive data. Choose based on whether speed or security matters more to you.
Speed and Build Comparison
Read Speed
The Samsung BAR Plus offers read speeds up to 400MB/s, while the SanDisk Ultra Flair tops out at 150MB/s. This significant difference affects how quickly you can transfer large files. If you frequently move 4K video or large photo libraries, the Samsung drive completes these tasks much faster. You can send a 3GB file in roughly 10 seconds with the Samsung model. The SanDisk drive takes longer due to its lower speed limit. For casual use, such as transferring documents, both drives are sufficient. However, for heavy media workflows, the higher speed of the Samsung BAR Plus provides a tangible time saving.
USB Version
The Samsung BAR Plus uses the USB 3.1 standard, whereas the SanDisk Ultra Flair relies on USB 3.0. USB 3.1 generally supports higher bandwidths and improved power management compared to USB 3.0. This means the Samsung drive is better equipped to handle future host devices that may only support the newer standard. Both versions are backward compatible with older USB 2.0 ports, but you will not see full speeds on those older connections. If you have a modern computer with USB 3.1 ports, the Samsung drive will utilize that full potential. The SanDisk drive is limited by its USB 3.0 interface, capping its maximum throughput regardless of your port.
Storage Capacity
You are comparing a 128GB Samsung BAR Plus against a 64GB SanDisk Ultra Flair. The Samsung drive offers double the storage space, allowing you to store more photos, videos, and documents without needing to manage space constantly. The SanDisk model holds half that amount, which may fill up quickly if you transfer large media files. If you need to carry extensive backup data or high-resolution video projects, the larger capacity of the Samsung drive is more practical. The SanDisk drive is suitable for smaller transfers or as a secondary backup device. Consider your typical file sizes when deciding which capacity suits your daily needs.
Build and Durability
Both drives feature metal casings, providing a sturdy and durable exterior. The Samsung BAR Plus is described as waterproof, shock-proof, temperature-proof, magnet-proof, and X-ray-proof, offering comprehensive protection for your data in various environments. The SanDisk Ultra Flair also has a sleek, durable metal casing but does not list specific environmental resistance ratings. If you work in harsh conditions or need extra peace of mind for your files, the Samsung drive’s robust specifications are advantageous. Both designs are compact and suitable for everyday carry, but the Samsung model provides more detailed assurance against physical and environmental damage.
Security Features
The SanDisk Ultra Flair includes password protection using 128-bit AES encryption, adding a layer of security for your private files. This feature requires a software download for Mac users but is supported on Windows 7 and later. The Samsung BAR Plus data does not mention built-in software-based password protection. If keeping your data secure from unauthorized access is a priority, the SanDisk drive offers a native security solution. You must manage the encryption software separately for the SanDisk model. The Samsung drive relies on the physical security of its rugged casing rather than digital encryption features.
Choose Your Drive Based on Speed Needs
Users moving large 4K video files
The Samsung BAR Plus delivers read speeds up to 400MB/s. This allows you to transfer a 3GB 4K UHD video in just 10 seconds. The USB 3.1 standard ensures faster data access. If you handle large media files often, this speed saves significant time.
Users needing password protection for data
The SanDisk Ultra Flair includes 128-bit AES encryption. You can use password protection for private files directly on the drive. This feature is not listed for the Samsung model. If security is your priority for sensitive documents, this drive offers built-in protection without extra software on Windows.
Users wanting higher storage capacity
The Samsung BAR Plus is available in 128GB and larger sizes. The SanDisk Ultra Flair shown is a 64GB model. If you need more space for photos or videos, the Samsung option provides greater capacity. The rugged metal casing also offers durability against shock and water damage.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Samsung BAR Plus 128GB USB 3.1 Flash Drive | Fast transfers and rugged durability | Check price of Samsung BAR Plus 128GB USB 3.1 Flash Drive on Amazon |
| 2 | SanDisk 64GB Ultra Flair USB-A Drive | secure file storage with metal durability | Check price of SanDisk 64GB Ultra Flair USB-A Drive on Amazon |
The products compared
Samsung BAR Plus 128GB USB 3.1 Flash Drive
Best for: Fast transfers and rugged durability
- Read Speed
- 400MB/s (what this guide is about)
- Storage Capacity
- 128GB
- USB Version
- USB 3.1
- Features
- Metal Casing
- Dimensions
- 1.58 × 0.61 × 0.47 inches
View on Amazon: Samsung BAR Plus 128GB USB 3.1 Flash Drive Affiliate link
The Samsung BAR Plus 128GB is a rugged USB flash drive designed for fast data transfer. It features a read speed of 400MB/s, allowing you to move large files quickly. The metal casing provides durability against shock, water, and magnets. You get 128GB of storage in a compact, keyring-integrated design. This drive suits users who need reliable performance and physical protection for their data on the go.
Pros
- Read speeds up to 400MB/s
- Rugged metal casing for durability
- 128GB storage capacity
- Waterproof and shock-proof design
- Integrated keyring for portability
Cons
- Only 128GB capacity compared to higher options
- USB 3.1 interface may limit speeds on older ports
- No included software for encryption or management
Good fit if
- You need fast transfer speeds for large video files
- You work in environments requiring durable storage
- You want a compact drive with a keyring
Skip if
- You require more than 128GB of storage
- You need write speeds exceeding 300MB/s
- You prefer a plastic, lightweight design
Verdict: Samsung BAR Plus 128GB 400MB/s is ideal for professionals who prioritize speed and durability over maximum capacity. It fits users who frequently transfer large media files and need a drive that withstands physical stress.
SanDisk 64GB Ultra Flair USB-A Drive
Best for: secure file storage with metal durability
- Read Speed
- 150MB/s (what this guide is about)
- Storage Capacity
- 64GB
- USB Version
- USB 3.0
- Connector Type
- USB-A
- Security Standard
- 128-bit AES
- Security Features
- Password Protection
View on Amazon: SanDisk 64GB Ultra Flair USB-A Drive Affiliate link
This SanDisk Ultra Flair drive offers 64GB of storage with read speeds up to 150MB/s. It uses USB 3.0 technology for faster transfers than standard USB 2.0 drives. The sleek metal casing adds durability. You get 128-bit AES password protection for your files. It suits users who need reliable, secure storage in a compact metal body.
Pros
- Read speeds up to 150MB/s
- Durable metal casing
- 128-bit AES password protection
- USB 3.0 connectivity
Cons
- Lower read speed than 400MB/s competitors
- Smaller 64GB capacity option
- Requires software download for Mac encryption
Good fit if
- You need password protection for private files
- You prefer a durable metal build
- You transfer files between Windows and Mac devices
Skip if
- You require read speeds over 400MB/s
- You need more than 64GB in this specific model
- You want built-in encryption without software installation
Verdict: SanDisk Ultra Flair 64GB USB 3.0 fits users who prioritize file security and a sturdy metal design over maximum transfer speed. It is a solid choice for everyday backups.
Specifications side by side
| Spec | Samsung BAR Plus 128GB USB 3.1 Flash Drive | SanDisk 64GB Ultra Flair USB-A Drive |
|---|---|---|
| Storage Capacity | 128GB | 64GB |
| USB Version | USB 3.1 | USB 3.0 |
| Connector Type | not stated | USB-A |
| Read Speed | 400MB/s | Up to 150MB/s |
| Security Standard | not stated | 128-bit AES |
| Size | 128 GB | 64GB |
| Security Features | not stated | Password Protection |
| Features | Metal Casing | Metal Casing |
| Dimensions | 1.58 × 0.61 × 0.47 inches | 0.52 × 1.67 × 0.26 inches |
| Weight | not stated | 0.63 ounces |
| Color | Gray | Black |
| Model | MUF-128BE4/AM | SDCZ73-064G-G46 |
Frequently asked questions
Is 400MB/s fast enough for 4K video editing?
Yes, it is sufficient for most workflows. The Samsung BAR Plus delivers up to 400MB/s read speeds. This allows you to transfer a 3GB 4K UHD video in about 10 seconds. The USB 3.1 interface supports this high throughput. You can handle large media files without significant bottlenecks during export or backup.
What is the difference between USB 3.0 and USB 3.1?
The main difference is potential bandwidth and speed. The Samsung BAR Plus uses USB 3.1 for higher performance. The SanDisk Ultra Flair uses USB 3.0. Both are backward compatible with older ports. However, USB 3.1 often enables faster read speeds, like the 400MB/s found in the top pick. This matters for large file transfers.
Do these drives have metal casings for durability?
Yes, both selected models feature metal construction. The Samsung BAR Plus has a metal casing that withstands physical stress. The SanDisk Ultra Flair also offers a sturdy metal design. This protects the internal components from drops and impacts. You get reliable durability for everyday use or professional environments where equipment takes a beating.
Which drive is better for secure file storage?
The SanDisk Ultra Flair is ideal for this. It is best for secure file storage with metal durability. While it has a lower 150MB/s read speed, it fits users who prioritize security and a sturdy build. It is a solid choice for everyday backups where extreme speed is less critical than protection.
Can I use a USB 3.1 drive in a USB 2.0 port?
Yes, it is fully compatible. The Samsung BAR Plus uses USB 3.1 but works in older ports. You will not get the 400MB/s speed in a USB 2.0 port. The transfer rate will drop to match the port's limit. However, the drive will still function correctly for basic storage needs and slower transfers.
How much space do these flash drives offer?
The Samsung BAR Plus offers 128GB of storage. The SanDisk Ultra Flair provides 64GB. The higher capacity allows you to store more large files, such as 4K videos or high-resolution photos. Choose the 128GB model if you need more room. The 64GB option is lighter and smaller for simpler tasks.
Is the metal body hot during heavy use?
Metal casings can feel warm during sustained transfers. The Samsung BAR Plus has a metal casing that dissipates heat. The SanDisk Ultra Flair also uses metal for durability. This helps manage temperature during large file moves. The design ensures the drive remains safe to touch. It balances heat management with physical protection for your data.