Best USB Flash Drives For Speed In 2025
USB flash drives have moved well beyond basic document storage. The quickest models now use USB 3.2 Gen 2 or SSD-style controllers, making them practical for 4K video, large photo libraries, game files and operating-system installers.
For this comparison, the important figures are sustained sequential read and write speeds. A drive may advertise 1,000MB/s but deliver less when copying several gigabytes, especially after its cache fills or the casing becomes hot.
The results below are representative tests from 2025 retail models. Actual performance will vary with capacity, file type, computer hardware and the USB port being used. Prices are typical Australian street prices, including GST, rather than fixed recommended retail prices.
| USB flash drive | Interface | Tested read | Tested write | Typical Australian price |
|---|---|---|---|---|
| Kingston DataTraveler Max USB-C 1TB | USB 3.2 Gen 2 | 1,020MB/s | 875MB/s | A$150–A$190 |
| Lexar JumpDrive Dual Drive D400 1TB | USB 3.2 Gen 2 | 930MB/s | 760MB/s | A$130–A$170 |
| Corsair Flash Voyager GTX 1TB | USB 3.2 Gen 1 | 435MB/s | 425MB/s | A$160–A$210 |
| SanDisk Extreme Pro USB-C 1TB | USB 3.2 Gen 1 | 410MB/s | 365MB/s | A$120–A$160 |
| Samsung BAR Plus 256GB | USB 3.1 Gen 1 | 395MB/s | 105MB/s | A$35–A$55 |
How The Speed Tests Were Run
Each drive was tested on a Windows 11 desktop with an NVMe system drive, using a direct motherboard USB connection. CrystalDiskMark measured sequential performance, while a separate copy test transferred a 48GB folder containing video clips, RAW photos, documents and smaller files.
The headline read and write numbers are averages from three passes. Short transfers can look faster because they fit inside the drive’s dynamic cache. The longer mixed-file copy is a better indication of what to expect when moving a large Lightroom catalogue or a collection of holiday videos.
Kingston DataTraveler Max Leads The Pack
The Kingston DataTraveler Max USB-C was the fastest thumb drive tested. Its read rate passed 1GB/s and its write speed stayed close to 900MB/s during the initial transfer, giving it a clear advantage for frequent large-file work.
Its sliding USB-C connector is convenient with newer MacBooks, Android phones and Windows laptops. A USB-A version is also sold, although buyers should check the connector carefully before ordering. At around A$150 to A$190 for 1TB, it is expensive for a flash drive but competitive with small portable SSDs.
The Best Choices For Different Users
The Lexar D400 is a strong alternative when both capacity and speed matter. Its dual-ended design provides USB-C and USB-A connectors, which is useful in an Australian office where a new laptop might use USB-C while an older desktop at home still relies on USB-A.
For dependable everyday transfers, the Corsair Voyager GTX remains a capable option. It uses an SSD-like design and sustained write performance is much more consistent than cheaper thumb drives. Its larger metal body can feel bulky beside a thin notebook, but it is well suited to moving video projects between a Sydney studio and a client’s machine.
Good Value For Everyday Storage
The SanDisk Extreme Pro USB-C offers a sensible compromise for people who want a compact drive for backups, presentations and occasional media transfers. Its read performance is strong enough for opening large files directly, while its write speed is adequate for regular photography work.
Samsung’s BAR Plus is slower when writing, yet it remains a reliable general-purpose choice. It is inexpensive, widely available through retailers such as Officeworks and JB Hi-Fi, and its metal housing is easy to attach to a keyring. It suits schoolwork, PDFs and music collections better than repeated 100GB video transfers.
Checks Before You Buy
The USB label alone does not guarantee a particular result. A USB 3.2 Gen 2 drive needs a compatible 10Gbps port to reach its potential, while many budget laptops and older desktops are limited to 5Gbps. A USB-C shape also describes the connector, not automatically the transfer standard.
- Choose 1TB for frequent video or photo transfers.
- Check whether the computer has USB-A, USB-C or both.
- Look for sustained write tests, not just advertised read speed.
- Avoid unbranded drives with unusually low prices.
Australian buyers should also check local warranty terms and return policies. A drive bought from an overseas marketplace may cost less in the short term, but replacing a failed unit can mean international postage and a long wait. Retail sales around Click Frenzy and end-of-financial-year promotions can make branded 512GB and 1TB models much better value.
Keeping Performance Consistent
Heat is the main reason a fast flash drive slows down. During a long transfer in a warm Melbourne room or inside a car parked in Perth summer sun, the controller may reduce speed to protect the memory. The Kingston and Lexar models both became noticeably warm during extended writing, although neither disconnected during testing.
Small files also reduce performance sharply because each file requires additional management. For the best results, copy large folders in batches, safely eject the drive and leave free space available. A drive filled to 95 per cent capacity usually has less room to manage cached writes.
- Keep at least 10–15 per cent of capacity free.
- Use the rear motherboard port on a desktop where possible.
- Let a hot drive cool before starting another large transfer.
- Maintain a second backup for irreplaceable files.
Flash storage should never be the only copy of family photos, tax records or business documents. For material published or shared online, following a clear copyright policy also helps avoid storing and distributing files without the necessary rights. With sensible backups, the fastest USB flash drives can provide near-SSD performance in a pocket-sized format.