Biwin M350 2TB M.2 SSD
Here you will find a detailed speed, performance and benchmark test review. Tested was the M.2 NVMe SSD M350 with 2TB (BM350NN02TB-RGX) from the brand Biwin.
| Technical specifications (manufacturer information) | |
| Product image | 
|
| Manufacturer | Biwin |
| Model number | BM350NN02TB-RGX |
| Capacity | 2048 GB (1863 GiB) |
| pSLC cache | >400 GB approx. |
| Read speed | 5200 MB/s |
| Write speed | 4800 MB/s |
| Interface | PCIe 3.0 x4 |
| Connector | M.2 2280 |
| Memory module (NAND) | QLC |
| DRAM cache | No |
| TBW (Total Bytes Written) | 800 terabyte |
| Controller | Silicon Motion SM2268XT |
Compare product Compared to the test winner*
v0.273a OS: 10.0 build 19045 Drive : 0(NVME) Scsi : 2 Driver : W10 Model : BIWIN M350 2000GB Fw : X1105I HMB : 65536 - 65536 KB (Enabled, 64 M) Size : 1907729 MB [2000.4 GB] LBA Size : 512 AdminCmd : 0x00 0x01 0x02 0x04 0x05 0x06 0x08 0x09 0x0A 0x0C 0x10 0x11 0x14 0x80 0x81 0x82 0x84 0xC0 0xC1 0xC2 0xE0 0xE1 0xF0 0xF1 0xF2 I/O Cmd : 0x00 0x01 0x02 0x04 0x05 0x08 0x09 0x0C Controller: [SM2268XT] bufferless Bank00: 0x2c,0xe3,0x8d,0x42,0xee,0x30,0x1a,0x0 - Micron QLC 2048Gb/CE 1024Gb/die Bank01: 0x2c,0xe3,0x8d,0x42,0xee,0x30,0x1a,0x0 - Micron QLC 2048Gb/CE 1024Gb/die Bank02: 0x2c,0xe3,0x8d,0x42,0xee,0x30,0x1a,0x0 - Micron QLC 2048Gb/CE 1024Gb/die Bank03: 0x2c,0xe3,0x8d,0x42,0xee,0x30,0x1a,0x0 - Micron QLC 2048Gb/CE 1024Gb/die Bank08: 0x2c,0xe3,0x8d,0x42,0xee,0x30,0x1a,0x0 - Micron QLC 2048Gb/CE 1024Gb/die Bank09: 0x2c,0xe3,0x8d,0x42,0xee,0x30,0x1a,0x0 - Micron QLC 2048Gb/CE 1024Gb/die Bank10: 0x2c,0xe3,0x8d,0x42,0xee,0x30,0x1a,0x0 - Micron QLC 2048Gb/CE 1024Gb/die Bank11: 0x2c,0xe3,0x8d,0x42,0xee,0x30,0x1a,0x0 - Micron QLC 2048Gb/CE 1024Gb/die Channel: 4 CE : 2 Plane : 4 Die/Ce : 2 Ch map : 0x0F CE map : 0x05 Bit Per Cell : (SLC) Inter. : 4 Pages/Block : 3712(928) First Fblock : 1 Total Fblock : 635 Total Hblock : 59617 Fblock Per Ce : 635 Fblock Per Die: 635 Original Spare Block Count : 39 Vendor Marked Bad Block : 0 Bad Block From Pretest : 30 IOCtl: NVME_W10_GetLog 0x45d!
We put the Biwin NVMe M.2 SSD through a detailed test. You can find the test result / test report here:
AS SSD Benchmark
Standard performance test
The standard test was performed with a 5 GB file. A total score of 6484 points was achieved.
Copy performance test
A common everyday scenario 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 (cache remains enabled). The real-world test from 10 September 2025 shows performance during simultaneous write and read operations. The lower the duration, the better.
| AS SSD Copy Benchmark | Transfer rate: | Duration: |
|---|---|---|
| ISO two large files |
2,211.62 MB/s |
1.04 s |
| Program typical program folder with many small files |
1,165.46 MB/s |
6.04 s |
| Game a game folder with small and large files |
1,931.41 MB/s |
3.58 s |
Compression performance test
Here, speed is measured depending on how compressible the data is.
CrystalDiskMark Benchmark
Similar to AS SSD, two sequential and two random performance tests are carried out here and the write and read speed (manufacturer: 5200 MB/s and 4800 MB/s) the Biwin SSD is determined.
| CDM | Read [MB/s] | Write [MB/s] |
|---|---|---|
| SEQ1M Q8T1 |
6,251.24 |
5,820.12 |
| SEQ1M Q1T1 |
3,514.89 |
5,383.50 |
| RND4K Q32T16 |
3,853.50 |
3,032.68 |
| RND4K Q1T1 |
79.73 |
229.41 |
IOPS (Input/Output operations per second)
| CDM | Read [IOPS] | Write [IOPS] |
|---|---|---|
| SEQ1M Q8T1 |
5,961.60 |
5,550.50 |
| SEQ1M Q1T1 |
3,352.10 |
5,134.10 |
| RND4K Q32T16 |
940,796.00 |
740,401.00 |
| RND4K Q1T1 |
19,464.60 |
56,008.50 |
Average latency
| CDM | Read [µs] | Write [µs] |
|---|---|---|
| SEQ1M Q8T1 |
1,340.88 |
1,438.94 |
| SEQ1M Q1T1 |
298.12 |
194.54 |
| RND4K Q32T16 |
543.15 |
689.97 |
| RND4K Q1T1 |
51.23 |
17.68 |
HD Tune Pro long-term test
A long-term test was performed to fully utilize the storage. You can see from when a possible cache is full and write performance drops. A test file of 400 GB was written to the medium. The exact cache size could not be determined because the test file did not exhaust (push to the limit) the cache. The test file could at least be read with an average read speed of 2,880 MB/s and written at 4,185 MB/s.
ATTO Disk Benchmark
Here, a 256 MB file is written to the Biwin NVMe M.2 SSD multiple times. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster writing and reading usually becomes.
SSD-Z Benchmark
Similar to HD Tune, a 500 MB file is written to the Biwin NVMe M.2 SSD here. The transfer data is displayed. The more consistent the line, the better. Unfortunately, the tool no longer works correctly from around 4,000 MB/s and no line is displayed (and sometimes incorrect min/max data is shown).
You can find information about the test system at the bottom of the homepage.
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