TEST: MSI SPATIUM M461 2TB M.2 SSD

Technical data
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Manufacturer	MSI
Model number	S78-440Q550-P83
Storage capacity	2048 GB (1863 GiB)
pSLC-Cache	>320 GB approx.
Read speed	5000 MB/s
Write speed	4200 MB/s
Interface	PCIe 4.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	no
TBW (Total Bytes Written)	450 Terabyte
Controller	Phison PS5021-E21T
Price	ca. 154 USD (= 0,08 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

67 %

Write speed

62 %

*) 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 6146 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	4113,17 MB/s	4178,56 MB/s
4K in megabytes per second	58,91 MB/s	217,04 MB/s
4K-64Thrd in megabytes per second	1556,49 MB/s	2438,44 MB/s
Access time in milliseconds	0,016 ms	0,088 ms
Score	2027	3073
Total score	6146

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 September 20, 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	2051,86 MB/s	1,12 s
Program many small files	1164,22 MB/s	6,05 s
Game small and large files	1873,34 MB/s	3,69 s

Compression Performance Test

This measures the write and read speed of the the MSI SSDSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 5000MB/s and 4200MB/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	5002,88	4401,26
SEQ1M Q1T1	2969,34	4392,16
RND4K Q32T16	2898,00	2907,52
RND4K Q1T1	60,22	252,26

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 320 GB was written to the medium. The exact cache size could not be determined, because the test file did not exhaust the cache (brought it to the limit).At least the test file could be read with an average write speed of 3675 MB/s and written with 3887 MB/s.

HD Tune Pro Benchmark

HD Tune writes a 5 GB file to the MSI 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 MSI M.2 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 MSI M.2 SSD here. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on September 20, 2023.
Information about the test system can be found at the bottom of the home page.
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