Real World Speed
Performance profile from 1,977 user samples
602 User Benchmarks
Best Bench: 8% 3GB free, PID 1689 @USB 2.0
Worst Bench: 4% 0GB free, PID 1689 @USB 2.0
Poor: 4% Great: 8%
SPEED RANK: 559th / 634
1,375 User Benchmarks
Best Bench: 79% 15GB free, PID 5580 @USB 3.0
Worst Bench: 30% 11GB free, PID 5580 @USB 2.1
Poor: 30% Great: 79%
SPEED RANK: 13th / 634
Effective Speed
Effective USB Speed
5.42 % 76.6 % Insanely faster effective speed.
Peak Sequential Read Speed
16.9 MB/s 196 MB/s Insanely faster peak read speed.
Peak Sequential Write Speed
5.56 MB/s 62 MB/s Insanely faster peak write speed.
4K Read
Peak 4K Random Read Speed
2.23 MB/s 15.3 MB/s Hugely faster peak random read.
4K Write
Peak 4K Random Write Speed
0.4 MB/s 10.1 MB/s Insanely faster peak random write.
Value For Money
6.78 % 36.3 % Hugely better value.
User Rating
UBM User Rating
57 % 67 % More popular.
Price (score)
$7 Much cheaper.
75 Months 69 Months Slightly more recent.
16GB 16GB

USB 2.0 is old tech, so in terms of performance this drive is less than half as fast as its USB 3.0 counterparts. Interestingly the 4K write speed is reasonable at 0.4 MBps. If you plan to move a lot of data to and from the drive you will be much better off with one of the faster USB 3.0 drives. That said, the SE9 has a beautiful form factor and is both rock solid and relatively light making it ideal for use on a keyring. [Nov '12 USBFlashPro]


The benchmark scores for the SanDisk Extreme were stunning. Until now every flash drive we have tested has shown a serious weakness in the area of 4K random writes. The SanDisk Extreme achieved a 4K random write speed of 2.1 MB/s which was over three times faster than the best of the rest, unfortunately we were unable to get consistent measurements but 2.1 MB/s was towards at the lower end of the range (10.8 MB/s - 1.71 MB/s) we observed. We suspect the inconsistency relates to the way the controller batches page cleanup. The other benchmark observations were all consistent and to date this drive has the highest sequential read we have seen on a 16GB flash drive. The SanDisk Extreme has not been released in the UK. Our test unit had to be shipped from Hong Kong where we were able to purchase it at at an extremely reasonable price. We will update the price if/when the drive becomes officially available in the UK ... [Jul '12 USBFlashPro]


USB Flash Drive Rankings (Price vs Performance) March 2018 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.
  • Fastest real world speed - Real World Speed measures performance for typical flash usage patterns.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $189AMD RX 480 $400Samsung 850 Pro 256GB $160
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $198SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $51Corsair Vengeance LPX DDR4 3200 C16 2x8GB $205SanDisk Extreme 16GB $18
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback