Fanxiang S770 4TB NVMe SSD detailed specs (2026)
What memory type installed in Fanxiang S770 4TB and further characteristics watch here.

Controller & Memory
Fanxiang's 4TB S770 internal SSD use Innogrit IG5236. This storage has DRAM Yes for mapping data, located on the internal SSD. The S770 comes equipped with YMTC 128-l TLC memory. This NVMe also available in 1 TB and 2 TB capacities.
Storage Comparisons:
S770 Performance & Benchmarks
Drive works on PCIe M.2 4.0 x 4 interface with read speeds 7300 Mbps, and maximum write speeds equals to 6800 Mbps. This model has input/output performance 6800000 on writing and 7300000 on reading operations.
Fanxiang S770 4 TB 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 S770 4 TB (this drive): 7,300 MB/s read, 6,800 MB/s write
Fanxiang S770 vs Competitors
See how the S770 stacks up against other M.2 4.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
Fanxiang provide 2 years warranty period that limited by 100 TBW. The S770 has 2000000 million hours MTBF.
Fanxiang S770 4 TB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 4 TB |
| Interface [?] | M.2 4.0 x 4 |
| Controller [?] | Innogrit IG5236 |
| Memory type [?] | YMTC 128-l TLC |
| DRAM [?] | Yes |
| Read speed (MB/s) [?] | 7300 |
| Write speed (MB/s) [?] | 6800 |
| Read IOPS [?] | 7300000 |
| Write IOPS [?] | 6800000 |
| Endurance (TBW) [?] | 100 |
| MTBF (million hours) [?] | 2000000 |
| Warranty (years) [?] | 2 |
Verdict: Is the S770 Worth It in 2026?
S770 (4TB) produced by Fanxiang support PCIe 4 that is undoubtedly faster than PCIe 3. The write speed is 6800 Mb/s, that is faster than has other rivals. The Internal SSD can write 100 TBW, that is not very much in comparison with nearest rivals. Overall, our editor highly advise to have Fanxiang S770 4TB for your PC.
+ Pros
- Excellent writing speed
- PCIe 4.0
- Capacity
- Cons
- Writing speed
Buy this or similar SSD Storage:
Video Review
Fanxiang S770 4TB SSD for PS5 – Insane Speed & Storage You Didn’t Know You Needed!