TEST: Netac ZX20 2TB external SSD

Here you can find a detailed performance and benchmark test of the external SSD ZX20 with 2TB (NETAC-ZX20-2TB) from Netac.
Score
1308
Price/GB
0,09 €


Technical data
Image ZX20
Manufacturer Netac
Model number NETAC-ZX20-2TB
Storage capacity 2048 GB (1863 GiB)
Read speed 2000 MB/s
Write speed 1700 MB/s
Interface USB 3.2 Gen 2x2 (20 Gbit/s)
Connection USB Typ C
Price ca. 186 USD (= 0,09 $ / GB)
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Compared to the top performer*
Read speed
100 %
Write speed
84 %

*) Test result evaluated according to AS SSD Score within the same size.

AS SSD Benchmark

Standard performance test

The standard test was performed with a 5 GB file. A total score of 1308 points was achieved.

AS SSD TEST: Netac ZX20 2TB

AS SSD Read: Write:
Seq
in megabytes per second
1907,44 MB/s
1617,85 MB/s
4K
in megabytes per second
27,66 MB/s
79,74 MB/s
4K-64Thrd
in megabytes per second
273,65 MB/s
329,38 MB/s
Access time
in milliseconds
0,047 ms
0,539 ms
Score
492
571
Total score
1308

Copy Performance Test

A common everyday situation is simulated here. Three test folders are created:

  • ISO (folder with two large files)
  • Program (folder with many small files)
  • Game (folder with small and large files)

The three folders are copied using the Windows Copy command (the cache remains enabled). The practical test of September 01, 2023 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: Netac ZX20 2TB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
864,99 MB/s
2,66 s
Program
many small files
137,44 MB/s
51,21 s
Game
small and large files
501,59 MB/s
13,77 s

Compression Performance Test

Here, the writing and reading speed of the SSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 2000MB/s and 1700MB/s respectively).

AS SSD TEST: Netac ZX20 2TB

CrystalDiskMark Benchmark

Here, two sequential and two random performance tests are performed, similar to the ones performed on the AS SSD.

CrystalDiskMark Benchmark TEST: Netac ZX20 2TB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
2078,46
1768,89
SEQ1M
Q1T1
1877,47
1623,80
RND4K
Q32T16
267,48
335,45
RND4K
Q1T1
33,88
85,59

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
1.982,20
1.686,90
SEQ1M
Q1T1
1.790,50
1.548,60
RND4K
Q32T16
65.303,70
81.896,00
RND4K
Q1T1
8.271,00
20.896,20

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
4.032,74
4.730,02
SEQ1M
Q1T1
558,31
645,12
RND4K
Q32T16
7.827,58
6.241,63
RND4K
Q1T1
120,77
47,73

HD Tune Pro Benchmark

HD Tune writes a 5 GB file to the Netac external SSD. The transfer data of the read speed is displayed graphically. The minimum, maximum and average values are also determined. The determined access time and burst rate are also displayed.

HD Tune TEST: Netac ZX20 2TB

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the Netac external SSD . The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they can be written and read.

ATTO Disk Benchmark TEST: Netac ZX20 2TB


Information about the test system can be found at the bottom of the home page.
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