Average Bench: 21.8% (190th of 639)

Based on 1,028 user benchmarks.  Device: VID 05dc PID a838 Models: Lexar USB Flash Drive, UFD USB Flash Drive
Poor: 8%Average: 21.8% Great: 39%

Very poor average bench

The Lexar JumpDrive S25 USB 3.0 64GB averaged 78.2% 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. Sustained Write Speed 45.1MB/s
Avg. Sequential Mixed IO Speed 41.9MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Lexar JumpDrive S25 USB 3.0 64GB is 31.2%. This is a relatively narrow range which indicates that the Lexar JumpDrive S25 USB 3.0 64GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 3MB/s
Avg. Sequential Read Speed 75.1MB/s
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Average Bench

(Based on 1,028 samples)
Min Avg Max
27 Read 75.1 142
6.18 Write 38.1 98
8.27 Mixed 41.9 86.2
14.8 SusWrite 45.1 78.7
62.7% 50 MB/s
Min Avg Max
1.52 4K Read 3 5.35
0.02 4K Write 0.56 0.85
0.12 4K Mixed 0.54 1
48.6% 1.37 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
12GB free, PID a838
Operating at USB 3.0 Speed
SusWrite @10s intervals: 72 72 71 72 72 72 MB/s
Read 111
Write 61.5
Mixed 90
SusWrite 71.8
108% 83.5 MB/s
4K Read 4.5
4K Write 0.7
4K Mixed 0.8
68% 2 MB/s
28GB free, PID a838
Operating at USB 2.1 Speed
SusWrite @10s intervals: 36 36 36 36 36 36 MB/s
Read 37.3
Write 35.7
Mixed 35
SusWrite 36
49% 36 MB/s
4K Read 3.9
4K Write 0.7
4K Mixed 1.1
76% 1.9 MB/s
7GB free, PID a838
Operating at USB 2.1 Speed
SusWrite @10s intervals: 25 24 25 26 26 25 MB/s
Read 32.5
Write 24.8
Mixed 24
SusWrite 25.4
35% 26.7 MB/s
4K Read 3.3
4K Write 0.6
4K Mixed 1
67% 1.63 MB/s
1,028 MORE »

 Prices

Approx. $20 @ launch in Jan '15
AmazonUS $2211 hrs
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USB Flash Drive Rankings (Price vs Performance) November 2018 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

Faster File Transfer with USB 3.0 Technology...

Added 3 years ago.

Good

2 years ago.

My transfers in CrystalDiskMark, similar to transfers in Windows 8.1 (write/read from USB) so UserBechmark SUX ... ----------------------------------------------------------------------- CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 150.625 MB/s Sequential Write : 78.766 MB/s Random Read 512KB : 132.510 MB/s Random Write 512KB : 10.873 MB/s Random Read 4KB (QD=1) : 4.773 MB/s [ 1165.2 IOPS] Random Write 4KB (QD=1) : 0.807 MB/s [ 197.1 IOPS] Random Read 4KB (QD=32) : 5.804 MB/s [ 1416.9 IOPS] Random Write 4KB (QD=32) : 0.887 MB/s [ 216.6 IOPS] Test : 2000 MB [I: 0.2% (0.1/59.6 GB)] (x2) Date : 2016/06/01 11:14:08 OS : Windows 8.1


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