Packaging & Contents Dimensions & Weight Build Quality CrystalDiskMark Benchmark Speed Test ATTO Benchmark Speed Test AS-SSD Benchmark Speed Test Conclusion

Packaging & Contents

The JumpDrive S73 ships on a large piece of cardboard with a plastic bubble wrap encasing the drive. There are read/write speeds of 45/20 MB/s clearly printed on the front of the box. We like the fact that Lexar have put the read/write figures right on the box, a lot of the other manufacturers like to leave you guessing. There is also a warning on the back of the box advising that the drive's capacity will drop a little after you format it, this of course applies to all flash drives rather than this specific drive. The S73 comes with a three year warranty, there are links to the website for further information.

Lexar JumpDrive S73 USB 30 16GB Box Front
Lexar JumpDrive S73 USB 30 16GB Box Back

Dimensions & Weight

The JumpDrive S73 measures 7cm long, 2.2cm wide and 1.1cm high. With these dimensions this flash drive might obstruct adjacent ports on a computer so you might need to get an extension cable if you have a lot of devices connected to the same cluster of USB ports on your PC. The JumpDrive weighs just 9 grams which is extremely light for a flash drive.

Lexar JumpDrive S73 USB 30 16GB Length Ruler

Build Quality

The JumpDrive S73 has a red light under switch area which flashes when the drive is accessing data. The drive is very light and well built, we like the retractable design which is done well on this drive. The shell feels a little hollow but the drive is extremely light so that makes up for it.

Lexar JumpDrive S73 USB 30 16GB Front
Lexar JumpDrive S73 USB 30 16GB Back

Test System

The test rig was a high end Core-i7 workstation kitted out with a 256GB Solid State drive and 16GB of RAM. The system was designed to be overclocked to 5GHZ but for the benchmarks, only the stock frequencies of 1.6GHz idle, 3.4GHz active and 3.8GHz turbo boost were used.
Motherboard ASUS P8Z68-V GEN 3
RAM Corsair Vengeance 16GB Dual Channel DDR3 (CML16GX3M4A1600C9)
Fixed Drive Corsair Performance Pro 256GB
CPU Intel Core i7-2600K
Operating System Windows 7

CrystalDiskMark Speed Test[FAQ]

CrystalDiskMark is a free disk benchmarking utility that is very simple to use. It takes eight measurements: the read and write speeds in megabytes per second (MBps) for sequential, 512KB, random 4KB and 4KB parallel disk operations. There are more screenshots from this benchmark posted on the web than any other, probably due to its clean and simple display. There is further information, including instructions on how to benchmark your own drives, on the CrystalDiskMark wiki page.

CrystalDiskMark Score

The JumpDrive S73 scored 46/21 MB/s in the sequential read/write tests. These scores are very weak and we expect to see much better performance on a USB 3.0 flash drive. The strongest area of performance for this drive is the 4K read which clocked in at 9.6 MB/s. Unfortunately in isolation that score does not help lift the drive from much above the bottom of the performance pack.

Crystaldiskmark Benchmark

ATTO Disk Benchmark[FAQ]

The Atto Disk Benchmark has probably been around for longer than any other disk benchmarking software, and you can tell from its dated interface! The utility was designed to measure regular disk drive performance but it's more than up to the task of measuring both USB flash drive and SSD speeds as well. The utility measures disk performance rates for various sizes of file and displays the results in a bar chart showing read and write speeds at each file size. The results are displayed in megabytes per second (MBps). There is further information, including instructions on how to benchmark your own drive, on the Atto wiki page.
ATTO Benchmark

ATTO Score

The ATTO results for the S73 are almost exactly in line with the CrystalDiskMark scores and at 45/21 MB/s come in almost exactly at Lexar's claimed read/write speeds of 45/20 MB/s. Its nice to see all the tests in line and in agreement with the manufacturer.

AS SSD Real World Copy Speed[FAQ]

The AS SSD benchmarking program was recently developed specifically for benchmarking SSD's. The utility is able to take several measurements that are well suited to solid state drives. One of the tests, ISO copy, is also relevant to slower storage devices including flash drives. The ISO copy test places two large 500MB files in a folder on the drive and then times how long it takes to copy the folder to another location on the same drive. The result is reported in both MBps and time taken. It's a real-world test that gauges a drives ability to read and write at the same time. Drives that have a good balance between their read and write speed fare relatively well on this test. There is further information, including instructions on how to use it to benchmark your own drive, on the AS SSD wiki page.

Real World Copy Speed Score

This test shows that the JumpDrive S73 would take 82.75 seconds to create a copy of a large 1GB video file. Generally flash drives complete this test at roughly half their sequential write rates. The S73 performed as expected in this test.

AS-SSD Copy Benchmark


The JumpDrive S73 is very light, weighing just 9 grams it's one of the lightest flash drives we have seen. From a performance perspective the JetFlash S73 is disappointing, we expect more from a recent USB 3.0 device, this drive is only a little faster than some USB 2.0 drives. In terms of value the JumpDrive S73 lands somewhere near the bottom of the pack, despite its reasonable price it's let down by poor read/write performance.

Original Review by:  
Updated 10 years ago.  
Lexar JumpDrive S73 USB 30 16GB Front

Average Bench: 10.9% (408th of 639)

Based on 459 user benchmarks.  Device: VID 05dc PID a205 Model: Lexar JumpDrive

The JumpDrive S73 is very light, weighing just 9 grams it's one of the lightest flash drives we have seen. From a performance perspective the JetFlash S73 is disappointing, we expect more from a recent USB 3.0 device, this drive is only a little faster than some USB 2.0 drives. In terms of value the JumpDrive S73 lands somewhere near the bottom of the pack, despite its reasonable price it's let down by poor read/write performance. [Jun '12 USBFlashPro]

Poor: 8%Average: 10.9% Great: 13%

Terrible average bench

The Lexar JumpDrive S73 USB 3.0 16GB averaged 89.0% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. Sequential Mixed IO Speed 21.2MB/s
Avg. Sustained Write Speed 19.6MB/s

Excellent consistency

The range of scores (95th - 5th percentile) for the Lexar JumpDrive S73 USB 3.0 16GB is just 5.19%. This is an extremely narrow range which indicates that the Lexar JumpDrive S73 USB 3.0 16GB performs superbly consistently under varying real world conditions.


Avg. 4K Random Read Speed 1.58MB/s
Avg. 4K Random Write Speed 0.22MB/s

Average Bench

(Based on 459 samples)
Min Avg Max
25.8 Read 38.8 43.6
15.6 Write 19.6 21.5
9.9 Mixed 21.2 27
16.2 SusWrite 19.6 21.4
30.7% 24.8 MB/s
Min Avg Max
0.2 4K Read 1.58 7.06
0 4K Write 0.22 0.4
0 4K Mixed 0.3 0.9
23.4% 0.7 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
459 MORE »


If you buy via one of these links, our site may earn a commission.

MSRP ≈ $20 @ launch in Jan '12
AmazonUS $183 years
Send price feedback
How Fast Is Your USB? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchmark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - SkillBench (space shooter) tests user input accuracy.
  • - Reports are generated and presented on
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
USB Flash Drive Rankings (Price vs Performance) June 2023 USB Rankings.

We highlight the best USB flash drive in terms of balanced performance and value for money using current prices, sequential read, sequential write , 4k read and 4k write speed. The speeds are combined to form a single effective speed which measures performance for tasks such as copying photos, music and videos. Effective speed is adjusted by current price and capacity to yield value for money. Finally thousands of individual user ratings are used to validate our benchmark figures. [USBFlashPro]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


Faster File Transfer with SuperSpeed USB 3.0 Technology...

Added 11 years ago.

Good (edit your comment) Add link

6 years ago.

It is pretty slow for writing, 20MB/s in Windows 10 with exFAT format. Reading is acceptable in Windows, 110MB/s, but ungodly slow at Mac, 20MB/s. Pretty disappointing as a USB flash drive.


6 years ago.

Had mine 5 days and now not working


6 years ago.


11.90 EUR

Very poor

10 years ago.


Read my full review and see the benchmark test results.


10 years ago.

I own one of these drives and according to my own benchmarks (CrystalDiskMark/AS SSD) the sequential write speed registers 36.69 MB/s and the copy speed is 18.10 MB/s. These are significantly better than the benchmarks on the particular drive you tested. However, in the USA, the Lexar S73 16 gig flash drive can be purchased for about $15.00 (just under 10 Pounds/11.4 Euro), so its cost is less than half the price of many of the others that out perform it. Although it is slow by USB 3.0 standards, it still benchmarks faster than any of the USB 2.0 drives that I own. So, is it fast? No. But considering its cost, it does represent a decent value.

639 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different USBs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i5-13600K $310Nvidia RTX 3060 $280Crucial MX500 250GB $25
Intel Core i5-12600K $224Nvidia RTX 3060-Ti $300Samsung 850 Evo 120GB $86
Intel Core i5-12400F $150Nvidia RTX 4070-Ti $780Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $67G.SKILL Trident Z DDR4 3200 C14 4x16GB $381SanDisk Ultra Fit 32GB $16
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback