TEST
YOUR USB

Samsung (ExtHD)

SSD 850 PRO 256G 256GB

▲ 500 ▼

Release date ≈ Q1 2015.

Average Bench: 171% (1st of 639)

Based on 7 user benchmarks.  Device: VID 174c PID 5106 Model: Samsung SSD 850 PRO 256G
Poor: 67%Average: 171% Great: 259%

Outstanding average bench

The Samsung SSD 850 PRO 256G 256GB averaged 70.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SSD 850 PRO 256G 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 35.4MB/s
Avg. 4K Random Write Speed 32.2MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung SSD 850 PRO 256G 256GB is 192%. This is a particularly wide range which indicates that the Samsung SSD 850 PRO 256G 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 218MB/s
Avg. Sustained Write Speed 123MB/s
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Average Bench

(Based on 7 samples)
Rank 1171%
Min Avg Max
39 Read 218 401
39.6 Write 176 363
39.3 Mixed 187 374
79.3 SusWrite 123 167
231% 176 MB/s
Min Avg Max
12 4K Read 19.3 23.4
16.2 4K Write 32.2 64.5
9.29 4K Mixed 16.1 29.7
1,711% 22.5 MB/s
Min Avg Max
13.5 DQ Read 21.5 26.8
18 DQ Write 35.4 56.1
9.28 DQ Mixed 16.8 30.1
1,854% 24.5 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
236GB free, PID 5106
Operating at USB 3.0 Speed
259% Outstanding
Read 168
Write 144
Mixed 138
188% 150 MB/s
4K Read 21
4K Write 64.5
4K Mixed 14.4
2,762% 33.3 MB/s
DQ Read 22.5
DQ Write 56.1
DQ Mixed 13.9
2,465% 30.9 MB/s
47GB free, PID 5106
Operating at USB 3.0 Speed
223% Outstanding
Read 401
Write 363
Mixed 374
484% 379 MB/s
4K Read 23.4
4K Write 26.1
4K Mixed 12.5
1,401% 20.7 MB/s
DQ Read 24.4
DQ Write 26
DQ Mixed 12.3
1,395% 20.9 MB/s
11GB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 76 79 80 80 80 80 MB/s
191% Outstanding
Read 258
Write 138
Mixed 168
SusWrite 79.3
197% 161 MB/s
4K Read 23.3
4K Write 42.4
4K Mixed 29.7
2,539% 31.8 MB/s
DQ Read 26.8
DQ Write 44.4
DQ Mixed 30.1
2,633% 33.8 MB/s
46GB free, PID 5106
Operating at USB 3.0 Speed
172% Outstanding
Read 251
Write 237
Mixed 243
312% 244 MB/s
4K Read 18.8
4K Write 26
4K Mixed 13
1,398% 19.3 MB/s
DQ Read 20
DQ Write 36.3
DQ Mixed 13.2
1,756% 23.2 MB/s
55GB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 169 177 170 171 156 158 MB/s
156% Outstanding
Read 251
Write 197
Mixed 200
SusWrite 167
268% 204 MB/s
4K Read 20.2
4K Write 25.4
4K Mixed 21.7
1,677% 22.4 MB/s
DQ Read 23.2
DQ Write 38.5
DQ Mixed 27.6
2,334% 29.8 MB/s
49GB free, PID 5106
Operating at USB 3.0 Speed
126% Outstanding
Read 159
Write 112
Mixed 146
173% 139 MB/s
4K Read 16.2
4K Write 24.4
4K Mixed 11.8
1,291% 17.5 MB/s
DQ Read 19.9
DQ Write 28.6
DQ Mixed 10.9
1,416% 19.8 MB/s
10GB free, PID 5106
Operating at USB 2.1 Speed
66.9% Good
Read 39
Write 39.6
Mixed 39.3
51% 39.3 MB/s
4K Read 12
4K Write 16.2
4K Mixed 9.29
911% 12.5 MB/s
DQ Read 13.5
DQ Write 18
DQ Mixed 9.28
977% 13.6 MB/s
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  • Best user rated - User sentiment trumps benchmarks for this comparison.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.

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Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
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