Average Bench: 51.5% (21st of 639)

Based on 469 user benchmarks.  Device: VID 05dc PID a212 Model: Lexar USB Flash Drive
Poor: 11%Average: 51.5% Great: 93%

Average average bench

The Lexar JumpDrive P20 USB 3.0 64GB averaged 48.4% 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. Sustained Write Speed 147MB/s
Avg. Sequential Write Speed 107MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Lexar JumpDrive P20 USB 3.0 64GB is 82.4%. This is a particularly wide range which indicates that the Lexar JumpDrive P20 USB 3.0 64GB performs inconsistently under varying real world conditions.


Avg. 4K Random Read Speed 4.62MB/s
Avg. 4K Random Write Speed 0.73MB/s

Average Bench

(Based on 469 samples)
Min Avg Max
28.2 Read 156 285
16.9 Write 107 252
14.3 Mixed 78 163
20.5 SusWrite 147 269
159% 122 MB/s
Min Avg Max
2.04 4K Read 4.62 8.15
0.1 4K Write 0.73 1
0.21 4K Mixed 0.92 1.6
73.1% 2.09 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
37GB free, PID a212
Operating at USB 3.0 Speed
SusWrite @10s intervals: 147 266 265 266 267 162 MB/s
Read 268
Write 257
Mixed 149
SusWrite 229
300% 226 MB/s
4K Read 4.4
4K Write 0.9
4K Mixed 1.5
98% 2.27 MB/s
27GB free, PID a212
Operating at USB 3.0 Speed
SusWrite @10s intervals: 270 136 97 272 272 153 MB/s
Read 217
Write 257
Mixed 134
SusWrite 200
274% 202 MB/s
4K Read 4.9
4K Write 1
4K Mixed 1.6
107% 2.5 MB/s
59GB free, PID a212
Operating at USB 3.0 Speed
SusWrite @10s intervals: 143 153 139 159 158 154 MB/s
Read 228
Write 223
Mixed 126
SusWrite 151
238% 182 MB/s
4K Read 4.5
4K Write 0.9
4K Mixed 1.2
88% 2.2 MB/s
27GB free, PID a212
Operating at USB 2.1 Speed
SusWrite @10s intervals: 41 43 43 43 42 43 MB/s
Read 41.7
Write 41.5
Mixed 37.2
SusWrite 42.3
56% 40.7 MB/s
4K Read 3.5
4K Write 0.8
4K Mixed 1.3
84% 1.87 MB/s
469 MORE »


MSRP ≈ $33 @ launch in Feb '15
AmazonUS LJDP20-64GCRBNA $2023 mins
BHPhotoUS LJDP20-64GCRBNA $403 years
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USB Flash Drive Rankings (Price vs Performance) May 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]


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.


Sleek, High-Performance Portable Storage...

Added 5 years ago.


3 years ago.

Unfortunately I must say that one of the slowest USB keys I have ever used whatever the benchmarks say.


12 months ago.

Below declared speeds. Few much cheaper ones are faster!

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.

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