TEST: Biwin Black Opal NV7400 1TB M.2 SSD

Technical data
Image
Manufacturer	Biwin
Model number	NV7400-1TB
Storage capacity	1024 GB (954 GiB)
pSLC-Cache	160 GB approx.
Read speed	7450 MB/s
Write speed	6500 MB/s
Interface	PCIe 4.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	no
TBW (Total Bytes Written)	1000 Terabyte
Controller	Maxio MAP1602
Price	ca. 90 USD (= 0,09 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

99 %

Write speed

96 %

*) 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 7292 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	6152,64 MB/s	5711,11 MB/s
4K in megabytes per second	67,68 MB/s	180,23 MB/s
4K-64Thrd in megabytes per second	2480,38 MB/s	1783,47 MB/s
Access time in milliseconds	0,022 ms	0,339 ms
Score	3163	2535
Total score	7292

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 11, 2025 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	2181,04 MB/s	1,05 s
Program many small files	1171,15 MB/s	6,01 s
Game small and large files	1963,84 MB/s	3,52 s

Compression Performance Test

This measures the write and read speed of the Biwin SSD, depending on the compressibility of the data (according to the manufacturer, these should be 7450 MB/s and 6500 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	7416,41	6590,59
SEQ1M Q1T1	5015,08	5497,39
RND4K Q32T16	3995,85	1725,69
RND4K Q1T1	73,20	195,25

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 300 GB was written to the medium. After approx. 160 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 4814 MB/s and written with 2536 MB/s.

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the Biwin 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 Biwin 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 July 11, 2025.
Information about the test system can be found at the bottom of the home page.
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