# Best 64GB USB Flash Drive 2026: 9 Ranked, and Three Spec Sheets That Contradict Themselves Source: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives Published: 2026-09-19 | Updated: 2026-09-19 | Prices checked on Amazon UK on 2026-09-19 Three of the nine 64GB USB flash drive listings in this guide print the same number for read and write speed. The SanDisk Ultra Flair states 150 MB/s for both. The Acer UT300 states 150 for both. The KOOTION quotes a 100 MB/s read and a write range of 70-100 MB/s, where the top of that range equals the read figure. In a 64GB USB flash drive, writing as fast as it reads does not happen — the write field has been filled in with the read number. The Kingston DataTraveler Exodia M goes further still: a write speed of 0.625 GB/s (625 MB/s), above what a USB 3.2 Gen 1 bus can deliver, against a read speed of 445 Bytes Per Second — under half a kilobyte per second. We ranked nine of the best 64GB flash drive options on Amazon on three checks: whether the read and write figures in the same listing agree with each other, how large the review base behind the star rating is, and what the price buys in connectors and warranty. Every number below comes from the listing itself. Where two figures in one listing contradict each other, we say so rather than round them off. ## The ranking ### 1. SanDisk Ultra Dual Drive Go 64GB USB-C and USB-A - Price: £13.79 | Amazon rating: 4.5 from 51,170 ratings - Full review: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives/sandisk-ultra-dual-drive-go - Buy on Amazon: https://www.amazon.co.uk/dp/B07YYK13LF?tag=ranked10-21 The only one of the nine whose 300 MB/s read sits above a separate 100 MB/s write figure — this 64GB USB flash drive is the one spec sheet that holds together. 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. Pros: 300 MB/s read and 100 MB/s write: the only pair here that is not identical; Reversible USB Type-C and USB Type-A connectors on one drive; 4.5 stars from 51,170 ratings; Swivel design, keyring hole and shockproof rating; Class 10 speed class listed Cons: £13.79, the highest price of the nine; Listed dimensions of 16 x 10 x 10 cm do not match a pocket flash drive; 51,170 ratings against the Cruzer Blade's 286,587; Only 1 year of EU spare part availability, against 5 years on two other listings ### 2. SanDisk Ultra Flair 64GB USB 3.0 Flash Drive - Price: £15.19 | Amazon rating: 4.6 from 194,822 ratings - Full review: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives/sandisk-ultra-flair-64gb - Buy on Amazon: https://www.amazon.co.uk/dp/B015CH1NAQ?tag=ranked10-21 194,822 ratings at 4.6 stars, the strongest track record here, but its write speed field simply repeats the 150 MB/s read figure. 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. Pros: 4.6 stars from 194,822 ratings, the largest sample of the nine; 150 MB/s read speed claimed; Metal casing, lightweight, 42 mm wide; SecureAccess encryption software included; Listed as compatible with both computers and TVs Cons: Write Speed field repeats the 150 MB/s read figure; £15.19, the highest price of the nine; USB Type-A only; no USB-C connector; Bullet points never state a separate write speed ### 3. Acer UT300 64GB USB-C and USB-A Flash Drive - Price: £11.99 | Amazon rating: 4.4 from 1,773 ratings - Full review: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives/acer-ut300-64gb - Buy on Amazon: https://www.amazon.co.uk/dp/B0FD99123J?tag=ranked10-21 A five-year warranty, an aluminium body and both connector types for £11.99, against a write speed field that again copies the 150 MB/s read. 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. Pros: £11.99 with both USB-C and USB-A connectors; Five-year limited warranty and 5-year EU spare part availability; Aluminium alloy chassis, 10 g; 150 MB/s read claimed on a USB 3.2 Gen 1 interface; Compatible with PC, MacBook, smartphone, tablet and TV Cons: Write Speed field repeats the 150 MB/s read figure; 1,773 ratings is a small sample next to the SanDisk drives; 4.4 average, with 7% one-star ratings against 70% five-star; £11.99 for an unverified write speed ### 4. Kingston DataTraveler Exodia M 64GB USB 3.2 Drive - Price: £7.77 | Amazon rating: 4.3 from 27,165 ratings - Full review: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives/kingston-datatraveler-exodia-m-64gb - Buy on Amazon: https://www.amazon.co.uk/dp/B0B1JNDZ5J?tag=ranked10-21 The cheapest drive here at £7.77, and the one with the strangest pair of figures: 0.625 GB/s write against 445 Bytes Per Second read. 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. Pros: £7.77, tied cheapest of the nine; USB 3.2 Gen 1 Type-A interface; Moving cap protects the connector, with a keyring loop; 27,165 ratings behind the 4.3 average; 10 g, with multiple colour options by capacity Cons: Write Speed listed as 0.625 GB/s, above the USB 3.2 Gen 1 bus ceiling; Read Speed listed as 445 Bytes Per Second; 4.3 stars, joint lowest here, with the largest one-star share; Bullet points quote no transfer speeds at all ### 5. SanDisk Cruzer Blade 64GB USB 2.0 Flash Drive - Price: £9.99 | Amazon rating: 4.6 from 286,587 ratings - Full review: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives/sandisk-cruzer-blade-64gb - Buy on Amazon: https://www.amazon.co.uk/dp/B00BX5FOCK?tag=ranked10-21 286,587 ratings, the biggest review base of the nine, at a USB 2.0 speed of 30 MB/s read and 10 MB/s write. 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. Pros: 286,587 ratings at 4.6 stars, the largest review base of the nine; 30 MB/s read and 10 MB/s write, both stated; Ultra-compact contoured body; SecureAccess software with 128-bit AES encryption; Available from 8GB to 128GB Cons: USB 2.0 only; no USB 3.0 or USB-C; 10 MB/s write is the slowest stated write speed here; £9.99, £2.22 more than the cheapest drives, for a fraction of the speed; No keyring loop listed and no connector protection ### 6. Lexar JumpDrive USB 3.1 64GB Flash Drive - Price: £10.79 | Amazon rating: 4.5 from 3,689 ratings - Full review: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives/lexar-jumpdrive-64gb - Buy on Amazon: https://www.amazon.co.uk/dp/B08H1GDVGF?tag=ranked10-21 A 150 MB/s read figure against a write speed written as '10x' — a multiplier with no baseline to check it against. 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. Pros: 150 MB/s read speed stated; Retractable connector design, no cap to lose; 256-bit AES encryption software; Backwards compatible with USB 3.0 and USB 2.0; 9 g, with a three-year limited warranty Cons: Write speed listed only as '10x', with no baseline; £10.79 for an unverified write speed; Three-year warranty, two years short of the Acer and Exodia S; 3,689 ratings, a small sample ### 7. Kingston DataTraveler Exodia S 64GB USB 3.2 Drive - Price: £7.77 | Amazon rating: 4.3 from 888 ratings - Full review: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives/kingston-datatraveler-exodia-s-64gb - Buy on Amazon: https://www.amazon.co.uk/dp/B0F6NX2P3F?tag=ranked10-21 £7.77 with a five-year warranty and a 100 MB/s read figure — and no write speed field at all. 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. Pros: £7.77, tied cheapest of the nine; Five-year warranty and 5-year EU spare part availability; 100 MB/s read speed stated; Swivel cap protects the connector; shockproof and 8.32 g; Capacities up to 512GB Cons: No write speed stated in the spec table; 888 ratings, the second-smallest sample here; 4.3 stars, joint-lowest average of the nine; 7% one-star ratings against 66% five-star in the breakdown ### 8. KOOTION 64GB USB 3.0 Metal Flash Drive - Price: £8.15 | Amazon rating: 4.4 from 499 ratings - Full review: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives/kootion-64gb-usb-flash-drive - Buy on Amazon: https://www.amazon.co.uk/dp/B092D2HD5D?tag=ranked10-21 A 100 MB/s read against a 70-100 MB/s write range, where the top of the write range equals the read — the third listing that overstates write speed. 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. Pros: £8.15 for a metal-bodied drive; USB 3.0 interface that also works with USB 2.0 and 1.1 ports; Listed as waterproof, with dust, static, magnetism and heat resistance claimed; Keychain loop built in; 48 x 12 x 4 mm and 9 g, the slimmest drive here Cons: Write speed given as '70-100 MB/s', the top of which equals the 100 MB/s read; 499 ratings, the smallest sample of the nine; No independent test data behind the waterproof claim; Compatible devices limited to PC, laptop, TV, car and audio ### 9. Netac U505 64GB USB 2.0 Swivel Flash Drive - Price: £7.99 | Amazon rating: 4.4 from 7,720 ratings - Full review: https://www.ranked10.co.uk/tech/best-64gb-usb-flash-drives/netac-u505-64gb-flash-drive - Buy on Amazon: https://www.amazon.co.uk/dp/B082V2ZCBZ?tag=ranked10-21 USB 2.0, a 30 MB/s write figure and no read speed published — the cheapest route into 64GB storage, if speed is not the point. The Netac finishes the list because its interface does. It is USB 2.0, with a write speed of 30 MB/s and no read speed field published. Meanwhile the six drives above it that do quote a read figure start at 100 MB/s. It is ranked 3rd in USB Flash Drives, which says more about price than about throughput. For £7.99 you get a swivel design that rotates 360 degrees around an ABS plastic body with a rubber-oil finish, a capless build, a built-in LED light and a small ring for a keychain or lanyard. It is plug and play across Windows, Linux and Mac OS 10.3 and above, and it takes music, video and photos like any other 64GB pen drive. The catch is the interface. USB 2.0 caps the drive far below the 300 MB/s the SanDisk Ultra Dual Drive Go claims, and this listing does not even state a read speed. Even so, 7,720 ratings at 4.4 stars is a solid base for a budget stick. Do not buy it for large video files or system backups; do buy it for documents and photos. Pros: £7.99, among the cheapest of the nine; 7,720 ratings at 4.4 stars; Swivel 360-degree design with no cap to lose; Built-in LED light and keyring loop; Works with Windows, Linux and Mac OS without extra software Cons: USB 2.0 interface only; No read speed published, and a 30 MB/s write figure; 20 g, the heaviest drive of the nine; No encryption software or warranty period listed ## Verdict For most homes, the SanDisk Ultra Dual Drive Go at £13.79 is the pick — it is the only 64GB USB flash drive here whose read and write figures differ in a believable direction, and the USB-C plus USB-A design covers phones and laptops. For pure budget, the Kingston Exodia M and Exodia S at £7.77 are the cheapest 64GB USB flash drive options, though neither publishes a write figure you can check. If you want the longest track record, the SanDisk Cruzer Blade at £9.99 has 286,587 ratings but stops at USB 2.0 — accept 10 MB/s writes and it is fine; need speed and it is not.