TEST
YOUR USB

Seagate (ExtHD)

Expansion Desk 250GB

▲ 500 ▼

Release date ≈ Q3 2018.

Average Bench: 68.2% (8th of 639)

Based on 9 user benchmarks.  Device: VID 0bc2 PID 3312 Model: Seagate Expansion Desk
Poor: 9%Average: 68.2% Great: 174%

Above average average bench

The Seagate Expansion Desk 250GB averaged 31.7% 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 32.7MB/s
Avg. 4K-64Thread Mixed IO Speed 25.1MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Seagate Expansion Desk 250GB is 166%. This is a particularly wide range which indicates that the Seagate Expansion Desk 250GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 114MB/s
Avg. 4K Random Read Speed 6.91MB/s
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Average Bench

(Based on 9 samples)
Rank 868.2%
Min Avg Max
22.7 Read 114 242
21.8 Write 112 248
18.3 Mixed 96.8 229
20.4 SusWrite 103 247
144% 106 MB/s
Min Avg Max
0.2 4K Read 6.91 21.1
0.3 4K Write 9.01 26.2
0.2 4K Mixed 7.66 23.1
593% 7.86 MB/s
Min Avg Max
21.7 DQ Read 22.1 22.3
28.4 DQ Write 32.7 40.4
24.3 DQ Mixed 25.1 25.7
2,049% 26.6 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
70GB free, PID 3312
Operating at USB 3.0 Speed
SusWrite @10s intervals: 245 245 245 247 248 248 MB/s
174% Outstanding
Read 242
Write 248
Mixed 229
SusWrite 246
331% 241 MB/s
4K Read 21.1
4K Write 26.2
4K Mixed 22.5
1,735% 23.3 MB/s
DQ Read 22.3
DQ Write 40.4
DQ Mixed 25.7
2,331% 29.5 MB/s
70GB free, PID 3312
Operating at USB 3.0 Speed
SusWrite @10s intervals: 247 247 248 248 248 246 MB/s
174% Outstanding
Read 240
Write 245
Mixed 224
SusWrite 247
328% 239 MB/s
4K Read 21
4K Write 26.1
4K Mixed 23.1
1,751% 23.4 MB/s
DQ Read 22.3
DQ Write 29.3
DQ Mixed 25.4
1,943% 25.7 MB/s
44GB free, PID 3312
Operating at USB 3.0 Speed
SusWrite @10s intervals: 170 148 127 120 145 113 MB/s
130% Outstanding
Read 215
Write 187
Mixed 206
SusWrite 137
249% 186 MB/s
4K Read 16.9
4K Write 21
4K Mixed 18.9
1,420% 18.9 MB/s
DQ Read 21.7
DQ Write 28.4
DQ Mixed 24.3
1,873% 24.8 MB/s
6GB free, PID 3312
Operating at USB 3.0 Speed
SusWrite @10s intervals: 58 60 61 61 61 61 MB/s
32.1% Below average
Read 94.3
Write 92.7
Mixed 46.5
SusWrite 60.1
96% 73.4 MB/s
4K Read 0.6
4K Write 1.7
4K Mixed 0.8
87% 1.03 MB/s
127GB free, PID 3312
Operating at USB 3.0 Speed
SusWrite @10s intervals: 81 82 79 76 81 81 MB/s
31.9% Below average
Read 69.3
Write 78.8
Mixed 49.2
SusWrite 80
95% 69.3 MB/s
4K Read 0.5
4K Write 1.4
4K Mixed 0.9
80% 0.93 MB/s
220GB free, PID 3312
Operating at USB 2.1 Speed
SusWrite @10s intervals: 26 27 27 27 27 27 MB/s
14.1% Very poor
Read 32.9
Write 21.8
Mixed 25.2
SusWrite 26.6
35% 26.6 MB/s
4K Read 0.7
4K Write 1.1
4K Mixed 0.8
67% 0.87 MB/s
138GB free, PID 3312
Operating at USB 3.0 Speed
SusWrite @10s intervals: 18 21 20 21 21 21 MB/s
8.71% Terrible
Read 22.7
Write 23.6
Mixed 18.3
SusWrite 20.4
29% 21.3 MB/s
4K Read 0.2
4K Write 0.3
4K Mixed 0.2
18% 0.23 MB/s
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