Best 64GB USB Flash Drive 2026: 9 Ranked, and Three Spec Sheets That Contradict Themselves

This is the one listing of the nine where the read and write fields disagree in a believable direction: 300 MB/s read, 100 MB/s write. Every other drive costing more than £10 either repeats the read figure in the write field or omits write speed altogether. It is also the most expensive drive here at £13.79, £6.02 more than the Kingston Exodia S, and its 300 MB/s read claim is double the SanDisk Ultra Flair's 150 MB/s.

In practice the dual-connector design is what you pay for. A reversible USB Type-C end and a traditional Type-A end let you move files between a USB-C phone, tablet or Mac and a Type-A laptop without an adapter. SanDisk's Memory Zone app handles automatic photo backup, the swivel body protects the connectors, and the keyring hole keeps the drive on a set of keys. It is listed as shockproof with a Class 10 speed class.

That said, you only get value from the USB-C end if you own a USB-C device — buy a cheaper Type-A drive if your kit is a desktop PC and a TV. Worth noting, too: the listed dimensions of 16 x 10 x 10 cm describe a box far larger than a flash drive, and the bullet points quote only the 300 MB/s read speed, never the 100 MB/s write.

The Ultra Flair has the biggest review base of any drive in this list: 194,822 ratings averaging 4.6 stars. However, its spec table is the first of three that do not add up. 'Write Speed' reads 150 MB/s and 'Read Speed' reads 150 MB/s. On a 64GB USB stick those two numbers are not equal in practice — writing is the slower direction of the two. The bullets repeat the same story: 'up to 150MB/s', with no separate write figure anywhere on the page.

What the drive does offer is a metal casing, a 42 mm-wide body and SanDisk SecureAccess software for password-protecting and encrypting private files. It is USB 3.0 Type-A, backwards compatible with USB 2.0, and SanDisk claims it moves a full-length movie in under 30 seconds and runs up to 15 times faster than standard USB 2.0 drives. It is listed as compatible with computers and TVs.

Crucially, it is the most expensive drive of the nine at £15.19 — £7.42 more than the Kingston Exodia M — and it has no USB-C connector. If your laptop and phone are both USB-C, this is the wrong shape. Either way, budget for a realistic write speed below 150 MB/s, which means the headline number is a read figure.

The UT300 is the second listing where 'Write Speed' and 'Read Speed' both read 150. Its bullet points only ever promise read speed: 'read speeds up to 150 MB/s', 'significantly improving transfer times compared to USB 2.0'. Meanwhile the price is £11.99 — £3.20 less than the Ultra Flair for the same claimed read figure and one more connector type.

Engineering-wise this is a dual-connector 64GB USB flash drive: USB Type-C and USB Type-A on one body, for phones, tablets, laptops, MacBooks, TVs and audio equipment. The chassis is aluminium alloy and the drive weighs 10 g. Acer backs it with a five-year limited warranty and lists EU spare part availability for five years, the longest cover in this group alongside the Kingston Exodia S.

The catch is the review sample: 1,773 ratings against 194,822 for the Ultra Flair. Its 4.4 average also rests on a thinner base — the rating breakdown lists 7% one-star against 70% five-star, a worse ratio than either SanDisk drive above it. If you want a large body of user history before you buy, this is not it.

This is the listing that breaks hardest. 'Write Speed' is given as 0.625 GB/s — 625 MB/s, above the ceiling a USB 3.2 Gen 1 bus can actually deliver. 'Read Speed' is given as 445 Bytes Per Second, under half a kilobyte per second, a figure no working 64GB USB flash drive would ship with. One of those numbers is a placeholder; neither can be taken at face value.

In practice the hardware is straightforward: USB 3.2 Gen 1, Type-A, NAND flash, a moving cap that slides over the connector, and a loop for a keyring. Capacities run up to 512GB with colour coding by capacity, and it weighs 10 g. At £7.77 it ties with the Kingston Exodia S as the cheapest of the nine.

Even so, 4.3 stars is the joint-lowest average in this list, and the rating breakdown carries 9% one-star against 68% five-star — the largest one-star share of the nine. Its three bullet points say nothing about speed at all. If read and write performance matter to you, pick a drive whose spec table gives you numbers you can actually trust.

By contrast with the drives above it, the Cruzer Blade is a USB flash drive 64GB with modest but consistent figures: 30 MB/s read and 10 MB/s write. That is a fifth of the 150 MB/s the Acer UT300 claims and a tenth of the SanDisk Ultra Dual Drive Go's 300 MB/s. What it has instead is volume: 286,587 ratings at 4.6 stars, more than the bottom four drives in this list combined.

The engineering is deliberately basic. It is a USB 2.0 Type-A drive in a contoured, ultra-compact body, sold from 8GB to 128GB with SanDisk SecureAccess software using 128-bit AES encryption for private files. In theory that makes it a simple 64GB memory stick for documents, photos and music between computers — no drivers, no adapter, no app.

However, USB 2.0 is the limit here, and that is a hard one. If you move video files or full system backups, a 10 MB/s write speed turns a large transfer into a long wait; a USB 3.0 flash drive 64GB will be several times quicker. Buy this one if your priority is reliability at the lowest risk, not speed.

The JumpDrive's read speed is stated plainly: 150 MB/s. Its write speed is not. The field reads '10x', a multiplier of an unnamed baseline — 10x faster than standard USB 2.0 drives, the bullet says. At £10.79, this 64GB USB flash drive sits between the £9.99 Cruzer Blade and the £11.99 Acer UT300, and unlike both of them it gives you no MB/s figure for writing at all.

The drive is USB 3.1 Gen 1, backwards compatible with USB 3.0 and 2.0, with a retractable connector instead of a cap and 256-bit AES encryption in Lexar's security software. It weighs 9 g. Its Amazon rank is listed as 33rd in USB Flash Drives, and it carries a three-year limited warranty.

That said, three years is two years less cover than the Acer UT300 and the Kingston Exodia S, and 3,689 ratings is a modest base next to the SanDisk drives. Without a stated write speed in MB/s, you are buying the read number and hoping. If write performance is what you need, look at the drives that state it — even the ones that state it wrongly.

The Exodia S is the mirror image of the drives at the top of this list. It states a read speed — 100 MB/s — and leaves the write speed field off the page entirely. Worth noting, because a missing number is more honest than a copied one: at least you know Kingston is not claiming parity.

What you get for £7.77 is USB 3.2 Gen 1 Type-A, an entry-level spec, in a swivel-cap body that protects the connector. It is listed as shockproof, weighs 8.32 g, comes in multiple colours by capacity up to 512GB, and carries a five-year warranty plus five-year EU spare part availability. In short, the same cover as the Acer UT300 for £4.22 less.

However, 888 ratings is the second-smallest sample of the nine behind the KOOTION's 499, and 4.3 stars is the joint-lowest average here. The rating breakdown lists 7% one-star against 66% five-star. With no write figure published, you cannot tell from the listing whether this is a fast drive or a slow one.

KOOTION quotes a read speed of 100 MB/s and a write speed of 70-100 MB/s. The upper bound of that write range is the read figure. It is the same pattern as the SanDisk Ultra Flair and the Acer UT300, just spread across a range instead of a single number. For a 64GB USB flash drive, a write speed that reaches the read speed is a marketing figure, not a measured one.

The body is metal and the drive is sold as waterproof, with the listing claiming resistance to dust, static electricity, magnetism and high temperature. A keychain loop is built in, and the drive is USB 3.0 while remaining compatible with USB 2.0 and 1.1 ports. At 48 x 12 x 4 mm and 9 g it is the slimmest drive here.

At the same time, 499 ratings is the smallest sample of the nine and there is no independent test data in the listing to back the waterproof claim. It is ranked 19th in USB Flash Drives, ahead of the Lexar and the Netac. If you want a metal body and a keyring, it is cheap; if you want proven speed, the write range cannot tell you.