TEST: Netac US9 512GB USB flash drive

Technical data
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Manufacturer	Netac
Model number	NC-US9-512GB
Storage capacity	512 GB (477 GiB)
pSLC-Cache	130 GB approx.
Read speed	1000 MB/s
Write speed	950 MB/s
Connection	USB Typ A+C
Price	ca. 60 AUD (= 0,12 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

52 %

Write speed

55 %

*) 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 1 GB file. A total score of 935 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	1016,07 MB/s	964,68 MB/s
4K in megabytes per second	28,84 MB/s	77,56 MB/s
4K-64Thrd in megabytes per second	179,79 MB/s	283,78 MB/s
Access time in milliseconds	0,049 ms	0,101 ms
Score	310	458
Total score	935

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 24, 2024 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	624,04 MB/s	1,72 s
Program many small files	194,02 MB/s	7,25 s
Game small and large files	437,20 MB/s	3,16 s

Compression Performance Test

Here, the writing and reading speed of the the Netac USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 1000MB/s and 950MB/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	1089,47	1026,52
SEQ1M Q1T1	1030,54	982,83
RND4K Q32T16	200,53	330,72
RND4K Q1T1	37,05	84,59