TEST: ADATA SE920 (@20Gbps) 1TB external SSD

Technical data
Image
Manufacturer	ADATA
Model number	SE920-1TCBK
Storage capacity	1024 GB (954 GiB)
pSLC-Cache	122 GB approx.
Read speed	3800 MB/s
Write speed	3700 MB/s
Interface	USB 3.2 Gen 2x2 (20 Gbit/s)
Connection	USB Typ C
Size (LxWxH)	122.56 x 64.2 x 15.9mm mm
Weight	182 gram
Price	ca. 164 AUD (= 0,16 $ / GB)
Paid link	Buy on Amazon

Compare Product

Compared to the top performer*

Read speed

56 %

Write speed

57 %

*) 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 1802 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	1880,04 MB/s	1914,19 MB/s
4K in megabytes per second	42,16 MB/s	69,56 MB/s
4K-64Thrd in megabytes per second	496,57 MB/s	428,31 MB/s
Access time in milliseconds	0,052 ms	0,263 ms
Score	727	689
Total score	1802

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 August 16, 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	958,25 MB/s	2,40 s
Program many small files	512,28 MB/s	13,74 s
Game small and large files	817,65 MB/s	8,45 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 3800MB/s and 3700MB/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	2075,54	2077,32
SEQ1M Q1T1	1573,69	1772,56
RND4K Q32T16	538,71	491,74
RND4K Q1T1	45,53	74,92