TEST
YOUR USB

ZTC-SM20 (ExtHD)

1-256G 256GB

▲ 500 ▼

Release date ≈ Q1 2018.

Average Bench: 160% (1st of 639)

Based on 7 user benchmarks.  Device: VID 152d PID 0578 Model: ZTC-SM20 1-256G
Poor: 43%Average: 160% Great: 209%

Popular builds with this USB

Outstanding average bench

The ZTC-SM20 1-256G 256GB averaged 60.2% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the ZTC-SM20 1-256G 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 48.8MB/s
Avg. 4K Random Write Speed 30.2MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the ZTC-SM20 1-256G 256GB is 166%. This is a particularly wide range which indicates that the ZTC-SM20 1-256G 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 246MB/s
Avg. 4K Random Read Speed 17MB/s
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Average Bench

(Based on 7 samples)
Rank 1160%
Min Avg Max
39.3 Read 246 300
38.8 Write 128 143
38.6 Mixed 147 169
201% 173 MB/s
Min Avg Max
12.1 4K Read 17 22.5
8.39 4K Write 30.2 42
11 4K Mixed 13.1 14
1,535% 20.1 MB/s
Min Avg Max
12.7 DQ Read 22.1 25.8
21.8 DQ Write 48.8 61.5
11 DQ Mixed 13.7 15.3
2,209% 28.2 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
158GB free, PID 0578
209% Outstanding
Read 300
Write 142
Mixed 169
233% 204 MB/s
4K Read 22.5
4K Write 42
4K Mixed 13.9
1,988% 26.2 MB/s
DQ Read 25.8
DQ Write 61.5
DQ Mixed 15.3
2,705% 34.2 MB/s
158GB free, PID 0578
190% Outstanding
Read 278
Write 142
Mixed 167
227% 195 MB/s
4K Read 15.6
4K Write 37.5
4K Mixed 13.2
1,783% 22.1 MB/s
DQ Read 23
DQ Write 49
DQ Mixed 13.9
2,227% 28.7 MB/s
158GB free, PID 0578
Operating at USB 3.0 Speed
189% Outstanding
Read 277
Write 142
Mixed 165
226% 195 MB/s
4K Read 15.8
4K Write 37.1
4K Mixed 13.6
1,782% 22.2 MB/s
DQ Read 23.2
DQ Write 49.2
DQ Mixed 13.8
2,230% 28.7 MB/s
158GB free, PID 0578
Operating at USB 3.0 Speed
177% Outstanding
Read 297
Write 143
Mixed 167
231% 202 MB/s
4K Read 22.5
4K Write 31.8
4K Mixed 14
1,640% 22.8 MB/s
DQ Read 25.8
DQ Write 58.7
DQ Mixed 15.1
2,607% 33.2 MB/s
214GB free, PID 0578
142% Outstanding
Read 268
Write 142
Mixed 160
221% 190 MB/s
4K Read 15
4K Write 22.2
4K Mixed 12.9
1,252% 16.7 MB/s
DQ Read 22.6
DQ Write 50.9
DQ Mixed 13.4
2,271% 29 MB/s
230GB free, PID 0578
60.3% Good
Read 41.5
Write 41.3
Mixed 41.1
53% 41.3 MB/s
4K Read 11.6
4K Write 13.8
4K Mixed 11
888% 12.2 MB/s
DQ Read 12.8
DQ Write 24.2
DQ Mixed 11.2
1,251% 16 MB/s
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical 1-256G 256GB Builds (Compare 1,944 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 10%
Tree trunk
Desktop
Desktop 60%
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Workstation
Workstation 10%
Tree trunk

System: HP Z800 Workstation

CPU
CPU: Intel Xeon X56501stBench 64%, 7,756 samples318x
CPU: Intel Xeon X56751stBench 68%, 4,275 samples188x
CPU: Intel Xeon X56701stBench 67%, 4,676 samples180x
GPU
Quadro 4000NvidiaBench 7%, 8,609 samples161x
GTX 1070Nvidia  $132Bench 80%, 1,459,281 samples88x
Quadro 5000NvidiaBench 10%, 751 samples68x
SSD
WDS100T2B0A-00SM50 1TBWDCBench 98%, 74,123 samples38x
850 Evo 500GBSamsung  $94Bench 112%, 695,664 samples34x
850 Evo 250GBSamsung  $100Bench 103%, 951,591 samples34x
RAM
ID:80 CE M393B5170FH0-CH9 ID:80 CE M393B5170FH0-CH9 ID:80 CE M393B5170FH0-CH9 ID:80 CE M393B5170FH0-CH9 ID:80 CE M393B5170FH0-CH9 ID:80 CE M393B5170FH0-CH9 58GBUnknownBench 50%, 261 samples23x
ID:80 2C 36JSZF51272PZ1G4F1 ID:80 2C 36JSZF51272PZ1G4F1 ID:80 2C 36JSZF51272PZ1G4F1 ID:80 2C 36JSZF51272PZ1G4F1 ID:80 2C 36JSZF51272PZ1G4F1 ID:80 2C 36JSZF51272PZ1G4F1 ID:80 2C 36JSZF51272PZ1G4F1 JE... 82GBUnknownBench 53%, 67 samples19x
ID:80 AD HMT31GR7BFR4C-H9 ID:80 AD HMT31GR7BFR4C-H9 ID:80 AD HMT31GR7BFR4C-H9 ID:80 AD HMT31GR7BFR4C-H9 ID:80 AD HMT31GR7BFR4C-H9 ID:80 AD HMT31GR7BFR4C-H9 ID:80 AD HMT31GR7BFR4C-H9 ID:80 AD H... 130GBUnknownBench 53%, 67 samples16x
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We highlight the best USB flash drive in terms of balanced performance and value for money using current prices, sequential read, sequential write , 4k read and 4k write speed. The speeds are combined to form a single effective speed which measures performance for tasks such as copying photos, music and videos. Effective speed is adjusted by current price and capacity to yield value for money. Finally thousands of individual user ratings are used to validate our benchmark figures. [USBFlashPro]

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