TEST: Corsair EX100U 2TB external SSD

Technical data
Image
Manufacturer	Corsair
Model number	CSSD-EX100U2TB
Storage capacity	2048 GB (1863 GiB)
pSLC-Cache	24 GB approx.
Read speed	1600 MB/s
Write speed	1500 MB/s
Interface	USB 3.2 Gen 2x2 (20 Gbit/s)
Connection	USB Typ C
Size (LxWxH)	79.39 x 36.65 x 11 mm
Weight	22 gram
Price	ca. 164 AUD (= 0,08 $ / GB)
Paid link	Buy on Amazon

Compare Product

Compared to the top performer*

Read speed

74 %

Write speed

73 %

*) 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 1287 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	1358,60 MB/s	1417,31 MB/s
4K in megabytes per second	24,71 MB/s	91,60 MB/s
4K-64Thrd in megabytes per second	253,25 MB/s	417,15 MB/s
Access time in milliseconds	0,090 ms	0,206 ms
Score	414	650
Total score	1287

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 July 21, 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	890,83 MB/s	2,58 s
Program many small files	140,54 MB/s	50,08 s
Game small and large files	511,65 MB/s	13,50 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 1600MB/s and 1500MB/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	1547,36	1523,05
SEQ1M Q1T1	837,83	1510,28
RND4K Q32T16	317,79	487,29
RND4K Q1T1	37,91	100,53