TEST: LaCie Portable SSD 500GB external SSD

Technical data
Image
Manufacturer	LaCie
Model number	STKS500400
Storage capacity	500 GB (466 GiB)
pSLC-Cache	24 GB approx.
Read speed	1050 MB/s
Write speed	1000 MB/s
Interface	USB 3.2 Gen 2x1 (10 Gbit/s)
Connection	USB Typ C
Price	ca. 75 USD (= 0,15 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

94 %

Write speed

79 %

*) 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 826 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	957,72 MB/s	787,84 MB/s
4K in megabytes per second	19,14 MB/s	88,27 MB/s
4K-64Thrd in megabytes per second	176,26 MB/s	221,14 MB/s
Access time in milliseconds	0,084 ms	0,207 ms
Score	291	388
Total score	826

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 November 09, 2022 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	617,62 MB/s	3,72 s
Program many small files	132,48 MB/s	53,13 s
Game small and large files	241,06 MB/s	28,66 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 1000MB/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	1052,05	837,69
SEQ1M Q1T1	686,67	819,45
RND4K Q32T16	273,38	396,87
RND4K Q1T1	36,83	97,86

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 50 GB was written to the medium. After approx. 24 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 970 MB/s and written with 383 MB/s.

HD Tune Pro Benchmark

HD Tune writes a 5 GB file to the LaCie 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.

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the LaCie 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.

SSD-Z Benchmark

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

The benchmark test was performed on November 09, 2022.
Information about the test system can be found at the bottom of the home page.
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