The 9 Best Flash Drives
Updated by · How we research
Price, write speed after the cache fills, size, build and warranty separate these nine USB-A, USB-C and dual flash drives. The SanDisk Extreme PRO Dual leads. When users buy our independently chosen editorial picks, we may earn commissions to help fund the Wiki.
Since iPhones moved to USB-C, a flash drive with both USB-C and USB-A plugs makes sense for almost everyone. Students, office workers and photographers use these pocket-size thumb drives to move documents, photos and video between computers, phones and TVs. Many slow to a crawl once their fast cache fills, and prices per gigabyte vary widely.
Editor's Notes
October 17, 2026, by Ezvid Wiki Admin:
Independent tests turned up one trap that shaped this update: several flash drives sink to around 70 MB/s once their fast cache fills. Most of the 2020 version of this list was gone as well. The Vansuny Black, SanDisk Cruzer Fit, Sabrent Rocket Nano, GorillaDrive 3.0, the single-plug SanDisk Extreme Pro and the Lightning SanDisk iXpand are no longer available. The old SanDisk Ultra Dual is still around, but SanDisk's metal version reads more than twice as fast for not much more.
The Samsung BAR Plus stays. The SanDisk Extreme PRO Dual is the new favorite, mainly because an independent test found it kept writing fast after its cache filled, which is the point where most flash drives crawl. Phones changed the field too: iPhones moved to USB-C, so drives with both USB-C and USB-A plugs, like the SanDisk Ultra Dual Drive Luxe and the Lexar D40E, make sense for almost everyone now.
Two honest caveats. Flash prices are high right now, so a 256GB stick costs more than it did a year or two ago. And the Samsung FIT Plus is a great little drive, but only its 256GB size had a price when we checked, so watch for the smaller one to come back.
Readers ask about secure drives, too. Password software on ordinary sticks is a light lock, so we added a note on hardware-encrypted keypad drives.
December 31, 2020:
There are three connectors common among current flash drives: Lightning, USB-A, and USB-C. The SanDisk iXpand is the best choice for iPhone users, and the SanDisk Ultra Dual the best for Android phone users. Both have Type-A ports as well as phone connectors, so they're perfect for transferring data.
The Vansuny Black is just about as fast as a common thumb drive comes, and in fact it performs on the same level as the premium SanDisk Extreme Pro, although the SanDisk may have more consistent quality assurance. If you're going for compact, the SanDisk Cruzer Fit, and if you need blazing speed, consider the Sabrent Rocket Nano. It is, technically, an external SSD, but it's still quite small, and its NVMe flash memory makes for ultra-fast reading and writing over the USB 3.2 bus.
April 27, 2019:
Flash drives are a fixture of mobile and desktop computing, and they come in a huge range of physical sizes, capacities, and price points. At the inexpensive end is the SanDisk Ultra Fit, though it is especially reliable. SanDisk's Ultra Dual is an excellent way to expand your smartphone's storage thanks to its USB-C connector, and if you have an iPhone, their iXpand is the way to go. The Samsung Fit is another relatively affordable choice and is as small as they come, plus it's outfitted with the brand's highly reliable flash memory. Their Bar Plus is exceptionally reliable, and partially because it's not ridiculously small, it can run at reasonable speeds with consistency. Speaking of Samsung, if you need more storage and higher performance, they make a couple truly cutting-edge eternal flash drives. The T5 is incredibly compact and lightweight and doesn't cost an arm and a leg, though while it uses a type C connector, it's still limited to USB SuperSpeed transfer rates. Their X5, on the other hand, is hands-down the fastest external drive on the market right now, although other manufacturers are racing to release competing high-speed units. Aside from its exorbitant price, its only other drawback is that it only works with Thunderbolt 3-enabled systems. Sabrent, for what it's worth, is one of the manufacturers looking to challenge Samsung's dominance on the capacity and throughput fronts. Their XTRM is a direct competitor to the X5 and comes at less than a third of the price in some sizes. Meanwhile, their Rocket Pro model works with any USB 3.1 system using a type C plug, and if you have 3.1 Gen 2 connectivity, it offers speeds far above what anything can do over USB type A. Finally, if you need a ton of storage but don't have a lot of space for it, the Corsair Voyager GTX is basically unmatched -- it's one of the only thumb drives anywhere that offers so many gigabytes with so much reliability in such a small package.
Special Honors
Kingston IronKey Kingston's IronKey line is made for people who carry sensitive files: business, legal, health and government users. These drives encrypt data in hardware, and the Keypad models unlock with a PIN entered on buttons built into the drive, so no software has to run on the computer. They cost far more than ordinary flash drives. kingston.com
Read Speed Versus Write Speed
Its Samsung FIT Plus sample read at about 320 MB/s but wrote at only about 58 MB/s.
The big number on the box is almost always the read speed, the rate at which files come off the drive. Writing, the rate at which files go onto it, is usually slower, and on cheap sticks it can be a fraction of the read figure. Tom's Hardware found writes between inexpensive and fast drives differing by as much as ten times in its file-copy tests. Its Samsung FIT Plus sample read at about 320 MB/s but wrote at only about 58 MB/s.
Many fast drives also use a cache: a slice of memory that takes data quickly until it fills, after which speed drops. In Everything USB's dual-drive test, the Transcend ESD310 fell from hundreds of megabytes per second to about 70 MB/s after roughly 70 GB, while the SanDisk Extreme PRO Dual held about 360 MB/s past its cache. If you copy big video folders or whole backups, sustained write speed matters more than any headline figure.
The port matters too. A drive rated for USB 3.2 Gen 2 (10 Gbps) reaches its full speed only in a 10 Gbps port, though Tom's Hardware notes such drives still beat cheap sticks in a 5 Gbps port. In an old USB 2.0 port, every drive slows to a crawl.
Plugs, Size And Capacity
Match the plug to your devices. USB-A is the rectangular port on most desktops, TVs and car stereos. USB-C is the small oval port on Android phones, iPads, recent laptops and every iPhone since the iPhone 15. Dual drives carry both, which makes them the practical choice for moving photos off a phone. Older iPhones with a Lightning port need a Lightning drive, which this list doesn't include.
Size is a tradeoff. A tiny drive such as the Samsung FIT Plus can stay plugged into a laptop or car stereo, but it's also simple to misplace. Stick-shaped SSDs like the Buffalo SSD-PUT are much faster and hold far more, but Tom's Hardware warns that wide drives can block the port next to them.
For capacity, 128GB covers documents, school work and music, while photo and video libraries call for 256GB to 2TB. Many drives ship formatted as FAT32, which can't store a single file over 4 GB; reformatting as exFAT fixes that on Windows and Mac. Compared with an external hard drive, a flash drive has no moving parts and is smaller and quicker, but a hard drive holds far more per dollar.
Fakes, Security And Backups
Be wary of no-name drives that promise huge capacities for little money. Many are fakes that report a size far larger than the memory inside, and they quietly corrupt files once the real space runs out. Tom's Hardware calls no-name 2TB sticks a scam. Check any new drive with a free tool such as H2testw, which writes test data across the whole drive and reads it back; RMPrepUSB explains how fake drives work and how to spot one.
A lost stick can leak whatever is on it. The password software bundled with many drives is a basic lock. For sensitive files, hardware-encrypted drives that unlock with a PIN typed on the drive itself are stronger, and they cost much more.
A flash drive is a way to carry files, not a safe place to keep the only copy. Flash memory can fail without warning, so keep important files in a second place too. We checked each brand on this list in the U.S. Consumer Product Safety Commission's recall database (SaferProducts.gov); the only hit was a 2006 recall of certain older Lexar JumpDrive models, none of them listed here.
How we researched this
We screened 29 current flash drives and stick-size SSDs, including every drive on the old list, and studied 11 finalists in depth. We used independent tests from Tom's Hardware and Everything USB, makers' and retailers' spec pages, patterns in owner feedback, and recall checks with the U.S. Consumer Product Safety Commission.
Sources (8)
Frequently asked questions
What is the best flash drive brand?
SanDisk and Samsung have the longest track records and the most independently tested models, and Lexar, Transcend, Buffalo and Kingston make well-reviewed drives too. Avoid no-name brands that promise very large capacities for little money.
Is a flash drive better than a hard drive?
For carrying files, yes: it has no moving parts and is smaller and usually faster. A hard drive holds far more per dollar, so it's better for big backups. Neither should hold your only copy of important files.
What is a flash drive used for?
Moving files between computers, phones, TVs and car stereos; carrying school or work documents; storing photos and music; and running tools such as a Windows or Linux installer.
Will a flash drive work with an iPhone or Android phone?
Yes, if it has a USB-C plug and the phone supports USB storage, as iPhone 15 and later models and most Android phones do. Older iPhones need a drive with a Lightning connector.
How can I tell if a flash drive is fake?
Run a full write-and-verify test with a free tool such as H2testw. A fake drive will report errors once the test passes its real capacity. Prices far below major brands are a warning sign.
What is the most secure flash drive?
A hardware-encrypted drive that unlocks with a PIN typed on the drive itself, such as Kingston's IronKey Keypad models. Password software on ordinary drives offers much weaker protection.
