TEST: Netac ZX20 512GB external SSD

Here you can find a detailed performance and benchmark test of the external SSD ZX20 with 512GB (NETAC-ZX20-512) from Netac.
Score
1263
Price/GB
0,13 €


Technical data
Image ZX20
Manufacturer Netac
Model number NETAC-ZX20-512
Storage capacity 512 GB (476 GiB)
pSLC-Cache 49 GB approx.
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. 67 USD (= 0,13 $ / GB)
Paid link Buy on Amazon
Compare Product
Compared to the top performer*
Read speed
100 %
Write speed
88 %

*) 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 1263 points was achieved.

AS SSD TEST: Netac ZX20 512GB

AS SSD Read: Write:
Seq
in megabytes per second
1907,43 MB/s
1604,00 MB/s
4K
in megabytes per second
28,12 MB/s
79,46 MB/s
4K-64Thrd
in megabytes per second
250,75 MB/s
319,45 MB/s
Access time
in milliseconds
0,049 ms
0,544 ms
Score
470
559
Total score
1263

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 April 13, 2023 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: Netac ZX20 512GB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
939,77 MB/s
2,45 s
Program
many small files
523,42 MB/s
13,45 s
Game
small and large files
796,11 MB/s
8,68 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 512GB

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 512GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
2073,19
1786,59
SEQ1M
Q1T1
1881,26
1680,43
RND4K
Q32T16
263,60
370,59
RND4K
Q1T1
34,42
86,27

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
1.977,10
1.703,80
SEQ1M
Q1T1
1.794,10
1.602,60
RND4K
Q32T16
64.355,20
90.476,10
RND4K
Q1T1
8.402,30
21.062,00

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
4.043,15
4.686,64
SEQ1M
Q1T1
557,21
623,66
RND4K
Q32T16
7.938,15
5.654,03
RND4K
Q1T1
118,89
47,36

HD Tune Pro Endurance test

A long-term test was performed here to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases. A test file of 100 GB was written to the medium. After approx. 49 GB, the pSLC-Cache was full and the performance was throttled.
At least the test file could be read with an average write speed of 1956 MB/s and written with 296 MB/s.

HD Tune Endurance Test TEST: Netac ZX20 512GB

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 512GB

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 512GB

SSD-Z Benchmark

Similar to HD Tune, a 500 MB file is written to the Netac external SSD here. is written. The transfer data is displayed. The more constant the line, the better.

SSD-Z TEST: Netac ZX20 512GB


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