Here you will find a detailed speed, performance and benchmark test review. Tested was the M.2 NVMe SSD S900 with 1TB (S900-1TB) from the brand fanxiang.
| Technical specifications (manufacturer information) | |
| Product image |
|
| Manufacturer | fanxiang |
| Model number | S900-1TB |
| Capacity | 1024 GB (931 GiB) |
| pSLC cache | 105 GB approx. |
| Read speed | 10000 MB/s |
| Write speed | 10000 MB/s |
| Interface | PCIe 5.0 x4 |
| Connector | M.2 2280 |
| Memory module (NAND) | TLC |
| DRAM cache | ✓ Yes |
| TBW (Total Bytes Written) | 700 terabyte |
| Warranty | 5 Years |
| Controller | Phison PS5026-E26 |
We put the fanxiang NVMe M.2 SSD through a detailed test. You can find the test result / test report here:
The standard test was performed with a 5 GB file. A total score of 9316 points was achieved.
A common everyday scenario is simulated here. Three test folders are created:
The three folders are copied using the Windows copy command (cache remains enabled). The real-world test from 27 July 2023 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 |
4,952.82 MB/s |
0.46 s |
| Program typical program folder with many small files |
511.21 MB/s |
13.77 s |
| Game a game folder with small and large files |
767.83 MB/s |
9.00 s |
Here, speed is measured depending on how compressible the data is.
Similar to AS SSD, two sequential and two random performance tests are carried out here and the write and read speed (manufacturer specs: 10000 MB/s and 10000 MB/s) the fanxiang SSD is measured.

| CDM | Read [MB/s] | Write [MB/s] |
|---|---|---|
| SEQ1M Q8T1 |
9,633.17 |
8,858.33 |
| SEQ1M Q1T1 |
7,497.73 |
8,840.88 |
| RND4K Q32T16 |
5,439.25 |
4,328.44 |
| RND4K Q1T1 |
83.13 |
318.72 |
| CDM | Read [IOPS] | Write [IOPS] |
|---|---|---|
| SEQ1M Q8T1 |
9,186.90 |
8,448.00 |
| SEQ1M Q1T1 |
7,150.40 |
8,431.30 |
| RND4K Q32T16 |
1,327,940.00 |
1,056,750.00 |
| RND4K Q1T1 |
20,295.40 |
77,813.20 |
| CDM | Read [µs] | Write [µs] |
|---|---|---|
| SEQ1M Q8T1 |
867.19 |
945.45 |
| SEQ1M Q1T1 |
139.67 |
118.41 |
| RND4K Q32T16 |
374.62 |
484.01 |
| RND4K Q1T1 |
49.16 |
12.77 |
A long-term test was performed to fully utilize the storage. You can see at what point the cache (if present) becomes full and write performance drops. A test file of 200 GB was written to the medium. After approx. 105 GB, the cache was full and performance was throttled.
The test file could at least be read with an average read speed of 7,713 MB/s and written at 2,932 MB/s.
HD Tune writes a 5 GB file to the fanxiang NVMe M.2 SSD. The transfer data of the read speed is displayed graphically. The minimum, maximum and average values are also determined. The measured access time and burst rate are also shown.

Here, a 256 MB file is written to the fanxiang 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.

You can find information about the test system at the bottom of the homepage.
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