Average Bench: 23% (181st of 639)

Based on 4,340 user benchmarks.  Device: VID 0781 PID 5591 Model: SanDisk Ultra USB 3.0
Poor: 12%Average: 23% Great: 32%

Very poor average bench

The SanDisk Ultra Flair USB 3.0 16GB averaged 77.0% 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.

Strengths

Avg. 4K Random Mixed IO Speed 2.64MB/s
Avg. 4K Random Write Speed 2.01MB/s

Good consistency

The range of scores (95th - 5th percentile) for the SanDisk Ultra Flair USB 3.0 16GB is 20.1%. This is a relatively narrow range which indicates that the SanDisk Ultra Flair USB 3.0 16GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 13.1MB/s
Avg. Sequential Write Speed 30MB/s
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Average Bench

(Based on 4,340 samples)
Min Avg Max
28.2 Read 87.6 153
13.7 Write 30 43.5
15 Mixed 33.6 57.2
6.93 SusWrite 13.1 15.4
45.3% 41.1 MB/s
Min Avg Max
3.22 4K Read 5.28 7.07
0.5 4K Write 2.01 2.8
1 4K Mixed 2.64 3.8
178% 3.31 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
13GB free, PID 5591
Operating at USB 3.0 Speed
SusWrite @10s intervals: 35 4.6 7.1 10 10 10 MB/s
Read 115
Write 36.7
Mixed 39.5
SusWrite 12.9
55% 51 MB/s
4K Read 4.8
4K Write 2.5
4K Mixed 3.3
215% 3.53 MB/s
14GB free, PID 5591
Operating at USB 3.0 Speed
SusWrite @10s intervals: 16 10 8.2 15 15 15 MB/s
Read 106
Write 19.5
Mixed 41.2
SusWrite 13.3
47% 45.1 MB/s
4K Read 4.1
4K Write 1.7
4K Mixed 3
175% 2.93 MB/s
14GB free, PID 5591
Operating at USB 3.0 Speed
SusWrite @10s intervals: 27 12 8.3 9.5 9.3 9.1 MB/s
Read 85.8
Write 21.3
Mixed 23
SusWrite 12.5
37% 35.7 MB/s
4K Read 4.2
4K Write 2.5
4K Mixed 2.7
192% 3.13 MB/s
14GB free, PID 5591
Operating at USB 2.1 Speed
SusWrite @10s intervals: 20 19 10 9.2 9 9 MB/s
Read 36
Write 19
Mixed 23.5
SusWrite 12.7
28% 22.8 MB/s
4K Read 5
4K Write 2.7
4K Mixed 3.6
233% 3.77 MB/s
10GB free, PID 5591
Operating at USB 2.1 Speed
SusWrite @10s intervals: 20 20 9.8 9.3 9.1 9.3 MB/s
Read 36.8
Write 19.2
Mixed 20
SusWrite 12.8
27% 22.2 MB/s
4K Read 4.6
4K Write 2.4
4K Mixed 3.3
211% 3.43 MB/s
13GB free, PID 5591
Operating at USB 2.1 Speed
SusWrite @10s intervals: 18 16 8.1 7.6 8.6 8.8 MB/s
Read 27.2
Write 19.5
Mixed 18
SusWrite 11.2
24% 19 MB/s
4K Read 3.2
4K Write 2.4
4K Mixed 2.6
182% 2.73 MB/s
4,340 MORE »

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USB Flash Drive Rankings (Price vs Performance) September 2019 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]

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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.

 Comments

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.
CPUGPUSSD
Intel Core i5-9400F $140Nvidia GTX 1660 $220Samsung 850 Evo 250GB $80
Intel Core i5-9600K $219Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $105
AMD Ryzen 5 3600 $195Nvidia RTX 2060S (Super) $429Samsung 850 Pro 256GB $211
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $70SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $34G.SKILL Trident Z DDR4 3200 C14 4x16GB $630SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $64Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 16GB $24
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