TEST: Transcend ESD370C Portable SSD 1TB external SSD

Technical data
Image
Manufacturer	Transcend
Model number	TS1TESD370C
Storage capacity	1024 GB (928 GiB)
pSLC-Cache	248 GB approx.
Read speed	1050 MB/s
Write speed	950 MB/s
Interface	USB 3.2 Gen 2x1 (10 Gbit/s)
Connection	USB Typ C
Size (LxWxH)	96.5 x 53.6 x 12.5 mm
Weight	87 gram
Price	ca. 135 USD (= 0,13 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

30 %

Write speed

30 %

*) Test result evaluated according to AS SSD Score within the same size.

AS SSD Benchmark

Standard performance test

The standard test was performed using a 5 GB file. A total score of 1210 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	1015,56 MB/s	1019,54 MB/s
4K in megabytes per second	24,97 MB/s	61,12 MB/s
4K-64Thrd in megabytes per second	331,97 MB/s	346,14 MB/s
Access time in milliseconds	0,062 ms	0,855 ms
Score	458	509
Total score	1210

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 June 18, 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	647,91 MB/s	3,55 s
Program many small files	370,50 MB/s	19,00 s
Game small and large files	552,49 MB/s	12,50 s

Compression Performance Test

This measures the write and read speed of the the external SSD from Transcend, depending on the compressibility of the data (according to the manufacturer, these should be 1050 MB/s and 950 MB/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	1090,88	1092,43
SEQ1M Q1T1	972,64	821,35
RND4K Q32T16	461,80	198,42
RND4K Q1T1	39,09	18,18

HD Tune Pro Endurance test

This is a long term test to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases.

HD Tune Pro Benchmark

HD Tune writes a 5 GB file to the Transcend 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 Transcend external SSD. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they were written and read.

SSD-Z Benchmark

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

The benchmark test was performed on June 18, 2023.
Information about the test system can be found at the bottom of the home page.
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