Fanxiang S660 512GB NVMe review (2026)
Fanxiang's S660 works on PCIe M.2 4.0 x 4 expansion standard. More details about this SSD in our article.
Controller & Memory
Fanxiang's 512GB S660 NVMe SSD use Phison PS5021-E21T 4 Channel. The SSD storing a data location map on DRAM No to run a games without delays. The S660 comes equipped with Micron 176-L QLC flash memory. NVMe SSD is offered also in three capacities: 4 TB, 1 TB and 2 TB volume sizes.
Storage Comparisons:
S660 Performance & Benchmarks
Internal SSD use PCIe M.2 4.0 x 4 interface with write speeds equals to 4500 MB/s, and maximum read speeds 5000 MB/s. This model has input/output performance 5000000 on reading and 4500000 on writing operations per second.
Fanxiang S660 512 GB vs M.2 4.0 x 4 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 4.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- Patriot Viper PV593 1 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 2 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 4 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV573 2 TB: 14,000 MB/s read, 12,000 MB/s write
- Fanxiang S660 512 GB (this drive): 5,000 MB/s read, 4,500 MB/s write
Fanxiang S660 vs Competitors
See how the S660 stacks up against other M.2 4.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
Manufacturer provide 2 years warranty period limited by 60 TBW. The S660 has 1500000 million hours MTBF.
Fanxiang S660 512 GB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 512 GB |
| Interface [?] | M.2 4.0 x 4 |
| Controller [?] | Phison PS5021-E21T 4 Channel |
| Memory type [?] | Micron 176-L QLC |
| DRAM [?] | No |
| Read speed (MB/s) [?] | 5000 |
| Write speed (MB/s) [?] | 4500 |
| Read IOPS [?] | 5000000 |
| Write IOPS [?] | 4500000 |
| Endurance (TBW) [?] | 60 |
| MTBF (million hours) [?] | 1500000 |
| Warranty (years) [?] | 2 |
Verdict: Is the S660 Worth It in 2026?
Fanxiang S660 512GB may work on PCIe Gen4 that is significantly faster than PCIe 3. The maximum write speed is 4500 Mbps, that is common for this interface. The SSD provide possibility to write 60 TBW, that is not much in comparison with competitors. Overall, Fanxiang S660 512GB is a well-rounded drive.
+ Pros
- Good writing speed
- PCIe 4.0
- Cons
- Capacity
- Writing speed
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Video Review
Fanxiang S660 Operation Video
