Average Bench: 120% (3rd of 639)

Based on 49 user benchmarks.  Device: VID 1f75 PID 0621 Model: Samsung SSD 850 EVO 250G
Poor: 30%Average: 120% Great: 228%

Outstanding average bench

The Samsung SSD 850 EVO 250G 250GB averaged 20.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SSD 850 EVO 250G 250GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 31.5MB/s
Avg. 4K Random Write Speed 22.9MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung SSD 850 EVO 250G 250GB is 198%. This is a particularly wide range which indicates that the Samsung SSD 850 EVO 250G 250GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 138MB/s
Avg. Sustained Write Speed 102MB/s
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Average Bench

(Based on 49 samples)
Min Avg Max
21 Read 138 254
5.2 Write 130 240
7.3 Mixed 131 245
9.5 SusWrite 102 242
169% 125 MB/s
Min Avg Max
0.1 4K Read 16.1 25
1.4 4K Write 22.9 77.6
0.1 4K Mixed 14.8 30.4
1,344% 17.9 MB/s
Min Avg Max
12.8 DQ Read 20.8 29.5
14.9 DQ Write 31.5 91.4
9.92 DQ Mixed 18.7 35.6
1,784% 23.7 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
106GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 107 106 106 108 105 104 MB/s
Read 106
Write 104
Mixed 104
SusWrite 106
144% 105 MB/s
4K Read 20
4K Write 25.9
4K Mixed 22.2
1,710% 22.7 MB/s
DQ Read 21.3
DQ Write 36.8
DQ Mixed 26.1
2,218% 28.1 MB/s
183GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 193 188 188 188 188 188 MB/s
Read 200
Write 191
Mixed 192
SusWrite 189
263% 193 MB/s
4K Read 13.5
4K Write 13.6
4K Mixed 12.8
948% 13.3 MB/s
DQ Read 15.2
DQ Write 14.9
DQ Mixed 14.8
1,067% 15 MB/s
78GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 94 95 95 95 95 95 MB/s
Read 103
Write 93.6
Mixed 97.9
SusWrite 94.6
132% 97.3 MB/s
4K Read 15.5
4K Write 19.4
4K Mixed 17.1
1,299% 17.3 MB/s
DQ Read 18.6
DQ Write 23.3
DQ Mixed 20.3
1,552% 20.7 MB/s
69GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 42 42 42 42 42 42 MB/s
Read 38.8
Write 38.5
Mixed 38.5
SusWrite 42
54% 39.5 MB/s
4K Read 16.2
4K Write 19.4
4K Mixed 17.2
1,305% 17.6 MB/s
DQ Read 17.3
DQ Write 20
DQ Mixed 18.5
1,374% 18.6 MB/s
6GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 43 42 43 43 42 43 MB/s
Read 42.4
Write 42.1
Mixed 41.7
SusWrite 42.5
58% 42.2 MB/s
4K Read 14.5
4K Write 16.1
4K Mixed 15.2
1,118% 15.3 MB/s
DQ Read 15.7
DQ Write 18.6
DQ Mixed 17
1,269% 17.1 MB/s
69GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 41 42 42 42 42 42 MB/s
Read 39.8
Write 39.5
Mixed 39.2
SusWrite 41.8
55% 40.1 MB/s
4K Read 14.4
4K Write 14.6
4K Mixed 13
992% 14 MB/s
DQ Read 16.9
DQ Write 20.4
DQ Mixed 18.5
1,386% 18.6 MB/s
49 MORE »
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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.

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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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The Best.
CPUGPUSSD
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $44
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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