TEST: Crucial X9 Pro 1TB external SSD

Technical data
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Manufacturer	Crucial
Model number	CT1000X9PROSSD9
Storage capacity	1024 GB (931 GiB)
pSLC-Cache	>300 GB approx.
Read speed	1050 MB/s
Write speed	975 MB/s
Interface	USB 3.2 Gen 2x1 (10 Gbit/s)
Connection	USB Typ C
Size (LxWxH)	65 x 50 mm
Weight	38 gram
Price	ca. 103 AUD (= 0,10 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

29 %

Write speed

25 %

*) 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 959 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	1005,37 MB/s	762,80 MB/s
4K in megabytes per second	25,97 MB/s	74,92 MB/s
4K-64Thrd in megabytes per second	236,43 MB/s	262,60 MB/s
Access time in milliseconds	0,050 ms	0,556 ms
Score	363	414
Total score	959

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 October 04, 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	476,08 MB/s	4,83 s
Program many small files	120,23 MB/s	58,55 s
Game small and large files	307,08 MB/s	22,50 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 1050MB/s and 975MB/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	1088,42	935,39
SEQ1M Q1T1	960,44	838,86
RND4K Q32T16	257,31	328,94
RND4K Q1T1	27,78	83,46