TEST
YOUR USB

Samsung (ExtHD)

SSD 840 EVO 1TB

▲ 500 ▼

Release date ≈ Q1 2015.

Average Bench: 151% (1st of 639)

Based on 14 user benchmarks.  Device: VID 174c PID 5106 Model: Samsung SSD 840 EVO 1TB
Poor: 69%Average: 151% Great: 213%

Outstanding average bench

The Samsung SSD 840 EVO 1TB averaged 51.2% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SSD 840 EVO 1TB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 33.3MB/s
Avg. 4K Random Write Speed 25.1MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung SSD 840 EVO 1TB is 144%. This is a particularly wide range which indicates that the Samsung SSD 840 EVO 1TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 221MB/s
Avg. Sustained Write Speed 133MB/s
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Average Bench

(Based on 14 samples)
Rank 1151%
Min Avg Max
37.5 Read 221 388
37.8 Write 173 349
37.5 Mixed 190 368
26.5 SusWrite 133 239
236% 179 MB/s
Min Avg Max
8.9 4K Read 19.3 32.1
7.8 4K Write 25.1 52.2
6.4 4K Mixed 16.1 40.3
1,472% 20.1 MB/s
Min Avg Max
10.3 DQ Read 23 36.9
10.5 DQ Write 33.3 65.9
8.45 DQ Mixed 17.9 45.3
1,828% 24.7 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
35GB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 171 156 176 205 202 207 MB/s
241% Outstanding
Read 221
Write 211
Mixed 203
SusWrite 186
278% 205 MB/s
4K Read 32.1
4K Write 52.2
4K Mixed 40.3
3,265% 41.5 MB/s
DQ Read 36.9
DQ Write 65.9
DQ Mixed 45.3
3,919% 49.4 MB/s
868GB free, PID 5106
Operating at USB 3.0 Speed
212% Outstanding
Read 388
Write 349
Mixed 368
470% 369 MB/s
4K Read 20.6
4K Write 24.2
4K Mixed 15.6
1,431% 20.1 MB/s
DQ Read 25.8
DQ Write 37.5
DQ Mixed 15.6
1,901% 26.3 MB/s
491GB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 239 239 239 239 239 239 MB/s
173% Outstanding
Read 250
Write 238
Mixed 234
SusWrite 239
328% 240 MB/s
4K Read 21.4
4K Write 25.9
4K Mixed 23.2
1,749% 23.5 MB/s
DQ Read 24.4
DQ Write 37.4
DQ Mixed 29.2
2,356% 30.3 MB/s
491GB free, PID 5106
Operating at USB 3.0 Speed
169% Outstanding
Read 247
Write 237
Mixed 242
311% 242 MB/s
4K Read 19.2
4K Write 25.1
4K Mixed 15
1,434% 19.7 MB/s
DQ Read 24.5
DQ Write 38.6
DQ Mixed 15.2
1,921% 26.1 MB/s
868GB free, PID 5106
Operating at USB 3.0 Speed
152% Outstanding
Read 372
Write 158
Mixed 228
289% 253 MB/s
4K Read 15.5
4K Write 19.6
4K Mixed 13.6
1,185% 16.2 MB/s
DQ Read 23.2
DQ Write 30.4
DQ Mixed 13.5
1,581% 22.4 MB/s
125GB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 184 155 161 165 189 183 MB/s
94.8% Outstanding
Read 214
Write 158
Mixed 182
SusWrite 173
242% 182 MB/s
4K Read 8.9
4K Write 7.8
4K Mixed 6.4
516% 7.7 MB/s
103GB free, PID 5106
Operating at USB 2.1 Speed
SusWrite @10s intervals: 39 39 39 39 39 39 MB/s
68.8% Good
Read 38
Write 38
Mixed 37.5
SusWrite 38.7
52% 38 MB/s
4K Read 11.2
4K Write 17
4K Mixed 14
1,096% 14.1 MB/s
DQ Read 13.1
DQ Write 18.3
DQ Mixed 15.4
1,195% 15.6 MB/s
102GB free, PID 5106
Operating at USB 2.1 Speed
SusWrite @10s intervals: 28 27 27 26 26 26 MB/s
65.6% Good
Read 37.5
Write 37.8
Mixed 37.5
SusWrite 26.5
47% 34.8 MB/s
4K Read 11.9
4K Write 16.8
4K Mixed 14
1,092% 14.2 MB/s
DQ Read 13.6
DQ Write 18.2
DQ Mixed 15.4
1,193% 15.7 MB/s
14 MORE »
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