TEST
YOUR USB

Seagate (ExtHD)

Expansion 250GB

▲ 500 ▼

Release date ≤ Q1 2014.

Average Bench: 38.6% (46th of 639)

Based on 25 user benchmarks.  Device: VID 0bc2 PID 2320 Model: Seagate Expansion
Poor: 13%Average: 38.6% Great: 147%

Poor average bench

The Seagate Expansion 250GB averaged 61.4% 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.

Strengths

Avg. 4K-64Thread Write Speed 33.7MB/s
Avg. 4K-64Thread Mixed IO Speed 18.9MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Seagate Expansion 250GB is 134%. This is a particularly wide range which indicates that the Seagate Expansion 250GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 2.8MB/s
Avg. Sequential Read Speed 73.7MB/s
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Average Bench

(Based on 25 samples)
Rank 4638.6%
Min Avg Max
26.5 Read 73.7 253
11.5 Write 62.3 245
8.92 Mixed 55.5 243
21.4 SusWrite 72.6 197
88.8% 66 MB/s
Min Avg Max
0.3 4K Read 2.8 20.3
0.3 4K Write 4.17 25.5
0.2 4K Mixed 2.76 21.1
246% 3.24 MB/s
Min Avg Max
19.7 DQ Read 21.1 22.7
30.4 DQ Write 33.7 37.3
14.4 DQ Mixed 18.9 24.1
1,867% 24.6 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
52GB free, PID 2320
Operating at USB 2.1 Speed
SusWrite @10s intervals: 240 165 127 105 103 103 MB/s
147% Outstanding
Read 238
Write 241
Mixed 227
SusWrite 140
284% 211 MB/s
4K Read 18.6
4K Write 25.2
4K Mixed 21.1
1,644% 21.6 MB/s
DQ Read 20.8
DQ Write 33.3
DQ Mixed 24.1
2,030% 26.1 MB/s
221GB free, PID 2320
Operating at USB 3.0 Speed
SusWrite @10s intervals: 91 91 91 91 91 91 MB/s
38.6% Below average
Read 90.4
Write 89
Mixed 58.9
SusWrite 91
111% 82.3 MB/s
4K Read 0.6
4K Write 1.8
4K Mixed 0.8
91% 1.07 MB/s
23GB free, PID 2320
Operating at USB 3.0 Speed
SusWrite @10s intervals: 79 77 78 77 78 79 MB/s
34.6% Below average
Read 80.4
Write 81.4
Mixed 60.3
SusWrite 78
102% 75 MB/s
4K Read 0.6
4K Write 1.9
4K Mixed 0.7
91% 1.07 MB/s
23GB free, PID 2320
Operating at USB 3.0 Speed
SusWrite @10s intervals: 79 70 77 78 78 79 MB/s
34.4% Below average
Read 80.7
Write 81.5
Mixed 60.3
SusWrite 76.8
101% 74.8 MB/s
4K Read 0.6
4K Write 1.9
4K Mixed 0.7
91% 1.07 MB/s
120GB free, PID 2320
Operating at USB 3.0 Speed
SusWrite @10s intervals: 57 59 59 59 60 59 MB/s
27.4% Poor
Read 71.7
Write 62.7
Mixed 38.2
SusWrite 59
76% 57.9 MB/s
4K Read 0.5
4K Write 1.3
4K Mixed 0.7
70% 0.83 MB/s
39GB free, PID 2320
Operating at USB 2.1 Speed
SusWrite @10s intervals: 33 36 37 37 37 36 MB/s
16.4% Very poor
Read 35.3
Write 11.5
Mixed 24.7
SusWrite 35.9
35% 26.9 MB/s
4K Read 0.5
4K Write 1.1
4K Mixed 0.5
56% 0.7 MB/s
25 MORE »
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.

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