Average Bench: 29.7% (102nd of 639)

Based on 230 user benchmarks.  Device: VID 0000 PID 0000 Model: KESU USB 3.0
Poor: 15%Average: 29.7% Great: 39%

Very poor average bench

The KESU USB 3.0 250GB averaged 70.3% 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-64Thread Write Speed 26MB/s
Avg. 4K-64Thread Mixed IO Speed 24MB/s

Good consistency

The range of scores (95th - 5th percentile) for the KESU USB 3.0 250GB is 24.2%. This is a relatively narrow range which indicates that the KESU USB 3.0 250GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.67MB/s
Avg. Sequential Read Speed 70MB/s
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Average Bench

(Based on 230 samples)
Min Avg Max
37.4 Read 70 99.8
33.9 Write 69.6 99
26.7 Mixed 41.9 53.5
37.9 SusWrite 69.8 96.8
84.5% 62.8 MB/s
Min Avg Max
0.1 4K Read 0.67 0.7
0.2 4K Write 1.35 1.4
0.5 4K Mixed 0.85 0.8
77.6% 0.96 MB/s
Min Avg Max
23.3 DQ Read 23.3 23.3
26 DQ Write 26 26
24 DQ Mixed 24 24
1,787% 24.4 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
189GB free, PID 0000
Operating at USB 3.0 Speed
SusWrite @10s intervals: 93 93 92 92 92 92 MB/s
Read 93.6
Write 92.9
Mixed 51.7
SusWrite 92.2
111% 82.6 MB/s
4K Read 0.6
4K Write 1.4
4K Mixed 0.8
77% 0.93 MB/s
189GB free, PID 0000
Operating at USB 3.0 Speed
SusWrite @10s intervals: 94 91 92 92 93 92 MB/s
Read 92.5
Write 93.1
Mixed 51.8
SusWrite 92.3
111% 82.4 MB/s
4K Read 0.6
4K Write 1.4
4K Mixed 0.8
77% 0.93 MB/s
189GB free, PID 0000
Operating at USB 3.0 Speed
SusWrite @10s intervals: 92 93 91 94 93 92 MB/s
Read 94.4
Write 94.1
Mixed 52.4
SusWrite 92.4
112% 83.3 MB/s
4K Read 0.6
4K Write 1.3
4K Mixed 0.8
74% 0.9 MB/s
189GB free, PID 0000
Operating at USB 3.0 Speed
SusWrite @10s intervals: 94 93 93 91 92 92 MB/s
Read 91.1
Write 91.3
Mixed 50.6
SusWrite 92.6
109% 81.4 MB/s
4K Read 0.6
4K Write 1.4
4K Mixed 0.8
77% 0.93 MB/s
189GB free, PID 0000
Operating at USB 3.0 Speed
SusWrite @10s intervals: 94 92 92 92 92 92 MB/s
Read 91.4
Write 94.1
Mixed 52.5
SusWrite 92.4
111% 82.6 MB/s
4K Read 0.6
4K Write 1.4
4K Mixed 0.8
77% 0.93 MB/s
189GB free, PID 0000
Operating at USB 3.0 Speed
SusWrite @10s intervals: 93 93 92 91 93 92 MB/s
Read 90.4
Write 94.7
Mixed 51.2
SusWrite 92.3
111% 82.2 MB/s
4K Read 0.6
4K Write 1.4
4K Mixed 0.8
77% 0.93 MB/s
189GB free, PID 0000
Operating at USB 3.0 Speed
SusWrite @10s intervals: 93 93 90 92 93 92 MB/s
Read 90.2
Write 93.7
Mixed 51.7
SusWrite 92.1
110% 81.9 MB/s
4K Read 0.6
4K Write 1.4
4K Mixed 0.8
77% 0.93 MB/s
189GB free, PID 0000
Operating at USB 3.0 Speed
SusWrite @10s intervals: 93 57 84 89 93 92 MB/s
Read 92.1
Write 95.4
Mixed 51.9
SusWrite 84.6
108% 81 MB/s
4K Read 0.6
4K Write 1.4
4K Mixed 0.8
77% 0.93 MB/s
189GB free, PID 0000
Operating at USB 2.1 Speed
SusWrite @10s intervals: 42 41 42 43 42 40 MB/s
Read 36.6
Write 33.9
Mixed 28.2
SusWrite 41.4
48% 35 MB/s
4K Read 0.1
4K Write 0.2
4K Mixed 0.9
38% 0.4 MB/s
230 MORE »
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  • - CPU tests include: integer, floating and string.
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USB Flash Drive Rankings (Price vs Performance) September 2021 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

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CPUGPUSSD
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 850 Evo 120GB $183
Intel Core i7-11700K $346Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $34Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $28Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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