Average Bench: 28.3% (91st of 618)

Based on 2,020 user benchmarks.  Device: VID 0781 PID 5581 Models: SanDisk SanDisk Ultra, SanDisk Ultra

Very poor average bench

The SanDisk Ultra USB 3.0 64GB averaged 71.6% 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 Random Write Speed 1.74MB/s
Avg. 4K Random Mixed IO Speed 1.02MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the SanDisk Ultra USB 3.0 64GB is 35.5%. This is a relatively wide range which indicates that the SanDisk Ultra USB 3.0 64GB performs inconsistently under varying real world conditions.


Avg. 4K Random Read Speed 4.96MB/s
Avg. Sequential Read Speed 89.7MB/s

Average Bench

(Based on 2,020 samples)
Min Avg Max
27.4 Read 89.7 157
12.1 Write 40.3 80.2
13.3 Mixed 50 96.4
68.2% 60 MB/s
Min Avg Max
2.9 4K Read 4.96 7.73
0.26 4K Write 1.74 2.54
0.05 4K Mixed 1.02 1.48
112% 2.57 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
46GB free, PID 5581
Operating at USB 3.0 Speed
Read 159
Write 62.1
Mixed 90.1
116% 104 MB/s
4K Read 8.95
4K Write 2.33
4K Mixed 1.41
160% 4.23 MB/s
54GB free, PID 5581
Operating at USB 3.0 Speed
Read 142
Write 75.1
Mixed 43
94% 86.6 MB/s
4K Read 5.12
4K Write 1.8
4K Mixed 1.41
128% 2.78 MB/s
56GB free, PID 5581
Operating at USB 3.0 Speed
Read 135
Write 52.9
Mixed 74.9
98% 87.5 MB/s
4K Read 4.82
4K Write 1.4
4K Mixed 1.08
102% 2.43 MB/s
55GB free, PID 5581
Operating at USB 3.0 Speed
Read 96
Write 34.8
Mixed 29.5
56% 53.4 MB/s
4K Read 5.44
4K Write 0.71
4K Mixed 0.55
63% 2.23 MB/s
9GB free, PID 5581
Operating at USB 2.1 Speed
Read 29.3
Write 20
Mixed 17.1
26% 22.1 MB/s
4K Read 5.05
4K Write 0.79
4K Mixed 0.41
60% 2.08 MB/s
2,020 MORE »


AmazonUS $19.408 mins ago.
BHPhotoUS $26.454 hrs ago.
NeweggUS $79.307 hrs ago.
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Typical Ultra USB 3.0 64GB Builds (Compare 1,494 builds) See popular component choices, score breakdowns and rankings.
Gaming 55%
Desktop 53%
Workstation 40%
Jet ski

Motherboard: Gigabyte GA-990FXA-UD5 - $192

EDIT WITH CUSTOM PC BUILDER Value: 73% - Very good Total price: $773

Popular Ultra USB 3.0 64GB compatible motherboards:

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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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 userbenchmark.com.
  • - 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.
USB Flash Drive Rankings (Price vs Performance) August 2017 USB Rankings.

We highlight the best USB flash drive in terms of balanced performance and value for money using price, 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 price and capacity to yield value for money. Finally thousands of individual user ratings are used to validate our benchmark figures. Vote to share your opinion. [USBFlashPro]


618 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 i7-7700K $300Nvidia GTX 1070 $367Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $280AMD RX 480 $390Samsung 850 Pro 256GB $120
Intel Core i5-7600K $212Nvidia GTX 1060-6GB $280Samsung 850 Evo 500GB $150
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $718SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $57HyperX Fury DDR4 2133 C14 2x8GB $139SanDisk Ultra Fit 32GB $13
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