TEST: Lexar SL660 BLAZE Gaming Portable SSD 1TB external SSD

Technical data
Image
Manufacturer	Lexar
Model number	LSL660X001T-RNNNG
Storage capacity	1024 GB (954 GiB)
pSLC-Cache	97 GB approx.
Read speed	2000 MB/s
Write speed	1900 MB/s
Interface	USB 3.2 Gen 2x2 (20 Gbit/s)
Connection	USB Typ C
Price	ca. 111 USD (= 0,11 $ / GB)
Paid link	Buy on Amazon

Compare Product

Compared to the top performer*

Read speed

100 %

Write speed

89 %

*) 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 1229 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	1916,97 MB/s	1685,80 MB/s
4K in megabytes per second	23,75 MB/s	79,03 MB/s
4K-64Thrd in megabytes per second	223,81 MB/s	321,77 MB/s
Access time in milliseconds	0,048 ms	0,660 ms
Score	439	569
Total score	1229

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 December 11, 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	826,07 MB/s	2,78 s
Program many small files	139,96 MB/s	50,29 s
Game small and large files	508,63 MB/s	13,58 s

Compression Performance Test

This measures the write and read speed of the SSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 2000MB/s and 1900MB/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	2075,88	1867,63
SEQ1M Q1T1	1868,05	1713,74
RND4K Q32T16	233,90	372,92
RND4K Q1T1	27,45	86,40

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. A test file of 120 GB was written to the medium. After approx. 97 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 1952 MB/s and written with 644 MB/s.

HD Tune Pro Benchmark

HD Tune writes a 5 GB file to the Lexar 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 Lexar 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 Lexar external SSD here. is written. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on December 11, 2022.
Information about the test system can be found at the bottom of the home page.
As an Amazon Associate I earn from qualifying purchases.