Average Bench: 74% (7th of 639)

Based on 4,354 user benchmarks.  Device: VID 0781 PID 5580 Model: SanDisk Extreme

For real world usability this is currently the best 64GB flash drive (superseded by the Ventura Ultra - 2014). It has a very balanced performance profile with an exceptional 4K random write speed. The 16GB version of the Extreme is currently the value leader in the USB 3.0 flash drive shootout. At present there are no viable alternatives to the 64GB Extreme in fact the Corsair voyager GT turbo is the only drive on the horizon that may challenge the Sandisk any time soon. There are however several reports (Newegg, Amazon) of compatibility issues with this, the 64GB version (other versions are fine), so if you do go for the 64GB version, don't throw the receipt away in a hurry. [Feb '13 USBFlashPro]

Poor: 25%Average: 74% Great: 111%

Good average bench

The SanDisk Extreme USB 3.0 64GB averaged 26.0% 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. 4K-64Thread Write Speed 10.7MB/s
Avg. 4K-64Thread Mixed IO Speed 8.91MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme USB 3.0 64GB is 86.2%. This is a particularly wide range which indicates that the SanDisk Extreme USB 3.0 64GB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 43.2MB/s
Avg. 4K Random Read Speed 8.94MB/s

Average Bench

(Based on 4,354 samples)
Min Avg Max
28.4 Read 160 251
7.48 Write 84.1 195
2.5 Mixed 43.2 121
15.9 SusWrite 104 196
119% 97.8 MB/s
Min Avg Max
2.65 4K Read 8.94 12.6
1.02 4K Write 8.45 11
3.48 4K Mixed 6.77 8.4
551% 8.05 MB/s
Min Avg Max
8.2 DQ Read 11 13.2
6.9 DQ Write 10.7 12.5
6.88 DQ Mixed 8.91 10.5
709% 10.2 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
58GB free, PID 5580
Operating at USB 3.0 Speed
SusWrite @10s intervals: 148 191 192 194 190 186 MB/s
Read 248
Write 194
Mixed 144
SusWrite 183
250% 192 MB/s
4K Read 8.4
4K Write 9.9
4K Mixed 6.9
603% 8.4 MB/s
DQ Read 11.7
DQ Write 11
DQ Mixed 8.1
693% 10.3 MB/s
18GB free, PID 5580
Operating at USB 2.1 Speed
SusWrite @10s intervals: 41 42 42 42 42 41 MB/s
Read 40.9
Write 39.2
Mixed 35.3
SusWrite 41.6
54% 39.2 MB/s
4K Read 7.4
4K Write 9.3
4K Mixed 6.5
565% 7.73 MB/s
DQ Read 9.1
DQ Write 9.7
DQ Mixed 7.9
632% 8.9 MB/s
5GB free, PID 5580
Operating at USB 2.1 Speed
SusWrite @10s intervals: 14 26 14 22 26 26 MB/s
Read 15.8
Write 7.7
Mixed 22.7
SusWrite 21.3
23% 16.9 MB/s
4K Read 6.1
4K Write 7.2
4K Mixed 5
438% 6.1 MB/s
4,354 MORE »
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.

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USB Flash Drive Rankings (Price vs Performance) January 2020 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.


Packs unparalleled transfer speeds...

  • Available capacities: 16GB, 32GB and 64GB
  • Performance/speed: Up to 190 MB/s** ; write speed lower and varies by capacity.
  • Dimensions: 2.79" x .84" x .45" (70.87 mm x 21.34 mm x 11.43 mm)
Added 6 years ago.

Excellent (edit your comment) Add link

7 months ago.


I have been using this for about 4 months now and nothing else even close and I've tried others!—Sep '14


2 months ago.


Failed after six months with a problem that seems quite common - could read from drive, but writing would instantly cause it to freeze.—Sep '14


Cant be happier, actual speed i get is even better than advertised, well happy. Below is comparison between usb 2&3. —Jan '15


2 months ago.

The speed (reading and writing) is wonderful, but there were problems after a short time: The stick was no longer recognized on every port, a loose contact was the cause. Too bad about the data.


7 months ago.

It is the fastest usb disk I have ever used. Performance is really on fire.


26 days ago.

Fastest USB I've Have. Recomended Item


7 months ago.

good speed.. 240mb read 190mb write


2 years ago.

only thing is it can not have any weight on the lanyard wile in use or the usb will ultimately fail I miss my cat


22 months ago.


Best stick I had until now; also works well together with usb 2 ports on older computers.—Sep '14


2 years ago.

I've tested it in a benchmark and got about 150MB/s for the sequential write speed but when I try to move a 40GB .vdi file (virtual machine), it's only 40MB/s... Going back to use my external hard drive.


21 months ago.

Great USB 3.0 Drive! Recommended, i just bought this drive for 20€!


3 years ago.

I liked a usb drives comparing


3 years ago.

it's really fast with 3.0 port


6 years ago.

Image  blog-imgs-54.fc2.com/...
CrystalDiskMark Benchmark Speed Test

CrystalDiskMark Benchmark Speed Test


16 months ago.

I love it!


3 years ago.

The feel of 'opening' it is the greatest ever.


15 months ago.

Quality issues


4 years ago.

Excellent drive, never have something like this. All recommendation for buying this USB 3.0 memory stick !

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

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