TEST: Sabrent Rocket 4 Plus 2TB M.2 SSD

Technical data
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Manufacturer	Sabrent
Model number	SB-RKT4P-2TB
Storage capacity	2048 GB (1863 GiB)
Read speed	7100 MB/s
Write speed	6600 MB/s
Interface	PCIe 4.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	✓ yes
TBW (Total Bytes Written)	1400 Terabyte
Controller	Phison PS5018-E18
Price	ca. 220 USD (= 0,11 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

95 %

Write speed

97 %

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

This SSD is PS5 compatible. It can be used as expansion storage in a PlayStation 5 console.

AS SSD Benchmark

Standard performance test

The standard test was performed using a 5 GB file. A total score of 8415 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	5743,18 MB/s	5942,51 MB/s
4K in megabytes per second	63,77 MB/s	223,15 MB/s
4K-64Thrd in megabytes per second	1912,71 MB/s	3729,80 MB/s
Access time in milliseconds	0,016 ms	0,086 ms
Score	2551	4547
Total score	8415

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 January 12, 2021 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	2137,54 MB/s	1,08 s
Program many small files	751,23 MB/s	9,37 s
Game small and large files	1533,23 MB/s	4,51 s

Compression Performance Test

This measures the write and read speed of the Sabrent SSD, depending on the compressibility of the data (according to the manufacturer, these should be 7100 MB/s and 6600 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	7077,88	6831,36
SEQ1M Q1T1	3590,65	5924,22
RND4K Q32T16	2723,04	3080,87
RND4K Q1T1	69,42	259,98

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 Sabrent M.2 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 Sabrent M.2 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 Sabrent M.2 SSD here. The transfer data is displayed. The more constant the line, the better. Unfortunately, the tool does not work correctly above about 5,000 MB/s and no line (and sometimes wrong min and max data) is displayed.

The benchmark test was performed on January 12, 2021.
Information about the test system can be found at the bottom of the home page.
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