TEST: Netac Z SLIM 500GB external SSD

Technical data
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Manufacturer	Netac
Model number	Netac-ZSLIM-500GB
Storage capacity	500 GB (466 GiB)
pSLC-Cache	172 GB approx.
Read speed	550 MB/s
Write speed	450 MB/s
Interface	USB 3.2 Gen 1x1 (5 Gbit/s)
Connection	USB Typ C
Size (LxWxH)	100 x 29,4 x 9 mm
Weight	30 gram
Price	ca. 50 AUD (= 0,10 $ / GB)
Paid link	Buy on Amazon

Compare Product

Compared to the top performer*

Read speed

26 %

Write speed

26 %

*) 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 449 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	511,94 MB/s	473,98 MB/s
4K in megabytes per second	23,16 MB/s	52,19 MB/s
4K-64Thrd in megabytes per second	86,04 MB/s	99,00 MB/s
Access time in milliseconds	0,063 ms	0,822 ms
Score	160	199
Total score	449

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

AS SSD Copy-Benchmark	Transfer rate:	Duration:
ISO two large files	375,02 MB/s	6,13 s
Program many small files	104,85 MB/s	67,13 s
Game small and large files	272,09 MB/s	25,39 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 550MB/s and 450MB/s respectively).

CrystalDiskMark Benchmark

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

CDM	Read [MB/s]	Write [MB/s]
SEQ1M Q8T1	541,11	509,56
SEQ1M Q1T1	539,39	491,33
RND4K Q32T16	111,54	121,35
RND4K Q1T1	28,79	57,35