Average Bench: 22.4% (192nd of 639)

Based on 6,939 user benchmarks.  Device: VID 0781 PID 5591 Model: SanDisk Ultra USB 3.0
Poor: 11%Average: 22.4% Great: 32%

Very poor average bench

The SanDisk Ultra Flair USB 3.0 16GB averaged 77.5% 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 2.26MB/s
Avg. 4K Random Write Speed 1.79MB/s

Good consistency

The range of scores (95th - 5th percentile) for the SanDisk Ultra Flair USB 3.0 16GB is 21.1%. 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 12.4MB/s
Avg. Sequential Write Speed 30.1MB/s
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Average Bench

(Based on 6,939 samples)
Min Avg Max
28.1 Read 89.2 154
13.6 Write 30.1 43.5
14.5 Mixed 30.8 57
7.05 SusWrite 12.4 15.3
44.2% 40.6 MB/s
Min Avg Max
3.2 4K Read 5.37 7.1
0.3 4K Write 1.79 2.7
0.9 4K Mixed 2.26 3.8
158% 3.14 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
9GB free, PID 5591
Operating at USB 3.0 Speed
SusWrite @10s intervals: 16 15 13 13 15 14 MB/s
Read 138
Write 44.2
Mixed 22.7
SusWrite 14.3
55% 54.7 MB/s
4K Read 7.3
4K Write 2.3
4K Mixed 1.4
153% 3.67 MB/s
8GB free, PID 5591
Operating at USB 3.0 Speed
SusWrite @10s intervals: 40 12 10 11 11 10 MB/s
Read 130
Write 42.4
Mixed 61.4
SusWrite 15.7
69% 62.2 MB/s
4K Read 5.5
4K Write 2.6
4K Mixed 3.7
235% 3.93 MB/s
10GB free, PID 5591
Operating at USB 3.0 Speed
SusWrite @10s intervals: 16 14 14 14 13 14 MB/s
Read 156
Write 44.7
Mixed 32.3
SusWrite 14.3
62% 61.9 MB/s
4K Read 6.3
4K Write 0.3
4K Mixed 1.8
95% 2.8 MB/s
5GB free, PID 5591
Operating at USB 3.0 Speed
SusWrite @10s intervals: 34 5.6 7.2 11 10 10 MB/s
Read 111
Write 34.3
Mixed 48.5
SusWrite 12.9
57% 51.7 MB/s
4K Read 4.7
4K Write 1.9
4K Mixed 3
184% 3.2 MB/s
10GB free, PID 5591
Operating at USB 3.0 Speed
SusWrite @10s intervals: 19 13 14 14 14 15 MB/s
Read 97
Write 31.3
Mixed 34.1
SusWrite 14.7
48% 44.3 MB/s
4K Read 7.3
4K Write 1.4
4K Mixed 1.6
129% 3.43 MB/s
6GB free, PID 5591
Operating at USB 2.1 Speed
SusWrite @10s intervals: 21 18 10 9.2 9.3 8.8 MB/s
Read 34.6
Write 20.9
Mixed 23.7
SusWrite 12.8
29% 23 MB/s
4K Read 4.7
4K Write 2.4
4K Mixed 3.6
222% 3.57 MB/s
14GB free, PID 5591
Operating at USB 2.1 Speed
SusWrite @10s intervals: 13 8 7 6.4 4.9 5 MB/s
Read 37.9
Write 20.7
Mixed 16.1
SusWrite 7.3
24% 20.5 MB/s
4K Read 5.5
4K Write 1.7
4K Mixed 1.6
133% 2.93 MB/s
14GB free, PID 5591
Operating at USB 2.1 Speed
SusWrite @10s intervals: 12 5.7 6.4 6.1 4.2 4.2 MB/s
Read 31
Write 13.3
Mixed 17
SusWrite 6.5
20% 17 MB/s
4K Read 4.6
4K Write 1.9
4K Mixed 1.2
122% 2.57 MB/s
3GB free, PID 5591
Operating at USB 2.1 Speed
SusWrite @10s intervals: 14 9.1 8.1 6.7 6.9 6.8 MB/s
Read 36.3
Write 21
Mixed 16.9
SusWrite 8.6
25% 20.7 MB/s
4K Read 5.7
4K Write 1.4
4K Mixed 1.6
123% 2.9 MB/s
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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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  • Best user rated - User sentiment trumps benchmarks for this comparison.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.

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 Frequently Asked Questions

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Intel Core i5-10600K $260Nvidia GTX 1650S (Super) $190Samsung 860 Evo 250GB $50
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Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $64SanDisk Extreme 64GB $72
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Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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