TEST
YOUR USB

External (ExtHD)

USB3.0 256GB

▲ 501 ▼

Release date ≈ Q4 2018.

Average Bench: 131% (3rd of 639)

Based on 13 user benchmarks.  Device: VID 152d PID 0578 Model: External USB3.0
Poor: 18%Average: 131% Great: 262%

Outstanding average bench

The External USB3.0 256GB averaged 30.6% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the External USB3.0 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 46.2MB/s
Avg. 4K-64Thread Mixed IO Speed 33.5MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the External USB3.0 256GB is 244%. This is a particularly wide range which indicates that the External USB3.0 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 178MB/s
Avg. 4K Random Read Speed 14.2MB/s
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Average Bench

(Based on 13 samples)
Rank 3131%
Min Avg Max
0.2 Read 178 382
22.2 Write 173 315
1.5 Mixed 157 358
19.8 SusWrite 163 297
228% 168 MB/s
Min Avg Max
2.3 4K Read 14.2 33.4
2.3 4K Write 21.4 50.8
2.6 4K Mixed 16.6 35.9
1,347% 17.4 MB/s
Min Avg Max
20.8 DQ Read 27.8 38.5
29.3 DQ Write 46.2 73
24.2 DQ Mixed 33.5 43.5
2,811% 35.8 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
128GB free, PID 0578
Operating at USB 3.0 Speed
SusWrite @10s intervals: 305 271 271 276 273 274 MB/s
241% Outstanding
Read 340
Write 282
Mixed 319
SusWrite 279
410% 305 MB/s
4K Read 23.9
4K Write 40.7
4K Mixed 40.4
2,847% 35 MB/s
DQ Read 36.4
DQ Write 41.8
DQ Mixed 27
2,475% 35.1 MB/s
238GB free, PID 0578
Operating at USB 3.0 Speed
SusWrite @10s intervals: 232 184 73 63 66 73 MB/s
105% Outstanding
Read 0.2
Write 180
Mixed 1.5
SusWrite 115
120% 74.2 MB/s
4K Read 20.1
4K Write 24.5
4K Mixed 20.4
1,602% 21.7 MB/s
DQ Read 24.8
DQ Write 37.8
DQ Mixed 26.4
2,276% 29.7 MB/s
95GB free, PID 0578
Operating at USB 2.1 Speed
SusWrite @10s intervals: 13 25 25 25 24 25 MB/s
29.1% Poor
Read 30.4
Write 24.1
Mixed 27
SusWrite 23
35% 26.1 MB/s
4K Read 5.2
4K Write 6
4K Mixed 5.3
404% 5.5 MB/s
13 MORE »
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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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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $254Nvidia RTX 4060 $300Crucial MX500 250GB $39
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
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HDDRAMUSB
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WD Blue 1TB (2012) $31Corsair Vengeance LPX DDR4 3000 C15 2x8GB $37SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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