TEST
YOUR USB

Samsung (ExtHD)

SSD 840 EVO 250G 250GB

▲ 500 ▼

Release date ≈ Q2 2017.

Average Bench: 131% (3rd of 639)

Based on 7 user benchmarks.  Device: VID 152d PID 0567 Model: Samsung SSD 840 EVO 250G
Poor: 17%Average: 131% Great: 205%

Outstanding average bench

The Samsung SSD 840 EVO 250G 250GB averaged 31.4% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SSD 840 EVO 250G 250GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 30.1MB/s
Avg. 4K-64Thread Mixed IO Speed 23.7MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung SSD 840 EVO 250G 250GB is 188%. This is a particularly wide range which indicates that the Samsung SSD 840 EVO 250G 250GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 200MB/s
Avg. 4K Random Read Speed 17.6MB/s
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Average Bench

(Based on 7 samples)
Rank 3131%
Min Avg Max
18 Read 200 399
13 Write 183 365
13 Mixed 183 349
79.2 SusWrite 177 286
252% 186 MB/s
Min Avg Max
3.54 4K Read 17.6 24.1
3.43 4K Write 20.6 26
1.88 4K Mixed 17.3 24.5
1,354% 18.5 MB/s
Min Avg Max
20.5 DQ Read 23.6 25.3
26.3 DQ Write 30.1 38
12.9 DQ Mixed 23.7 28.5
1,919% 25.8 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
131GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 363 271 270 270 272 272 MB/s
205% Outstanding
Read 399
Write 365
Mixed 349
SusWrite 286
468% 350 MB/s
4K Read 23.1
4K Write 25.7
4K Mixed 24.4
1,790% 24.4 MB/s
DQ Read 25.3
DQ Write 27.2
DQ Mixed 25.9
1,900% 26.1 MB/s
180GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 248 248 248 249 249 249 MB/s
177% Outstanding
Read 258
Write 247
Mixed 243
SusWrite 248
340% 249 MB/s
4K Read 24.1
4K Write 26
4K Mixed 24.5
1,807% 24.9 MB/s
DQ Read 25.2
DQ Write 26.3
DQ Mixed 25.4
1,852% 25.6 MB/s
195GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 174 185 190 194 201 203 MB/s
131% Outstanding
Read 201
Write 182
Mixed 179
SusWrite 191
255% 188 MB/s
4K Read 15.8
4K Write 18.3
4K Mixed 17.5
1,276% 17.2 MB/s
DQ Read 20.5
DQ Write 26.4
DQ Mixed 22.4
1,736% 23.1 MB/s
135GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 77 81 81 81 81 80 MB/s
116% Outstanding
Read 130
Write 120
Mixed 123
SusWrite 80.2
152% 113 MB/s
4K Read 20.4
4K Write 24.2
4K Mixed 22.1
1,650% 22.2 MB/s
DQ Read 24.1
DQ Write 38
DQ Mixed 28.5
2,351% 30.2 MB/s
79GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 79 82 80 77 79 78 MB/s
110% Outstanding
Read 163
Write 133
Mixed 147
SusWrite 79.2
171% 130 MB/s
4K Read 15.2
4K Write 21.2
4K Mixed 18.4
1,403% 18.3 MB/s
DQ Read 23.4
DQ Write 35.4
DQ Mixed 27.1
2,213% 28.6 MB/s
89GB free, PID 0567
Operating at USB 2.1 Speed
16.8% Very poor
Read 18
Write 13
Mixed 13
18% 14.7 MB/s
4K Read 3.54
4K Write 3.43
4K Mixed 1.88
193% 2.95 MB/s
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