# Fanxiang S800 4TB: large budget Gen4 storage (2026)

The Fanxiang S800 4 TB is the largest, most durable drive in Fanxiang's budget Gen4 line, rated at up to 7,300 MB/s reads with YMTC 232-layer TLC and a generous 2,800 TBW endurance figure.

Quick answer: Buy the Fanxiang S800 4 TB for a budget build that needs a large game library, media archive, or project cache on a single PCIe 4.0 drive, with 2,800 TBW of endurance and a five-year warranty for well under flagship money. Skip it when only a fast boot drive is needed, since the 1 TB or 2 TB is more than enough and the 4 TB's double-sided PCB may not fit thin laptops, or when brand familiarity matters, where the Crucial P310 4 TB is the safer pick. The natural rivals are the Crucial P310 4 TB and Crucial P3 4 TB, both budget options. We rate the 4 TB S800 a reasonable large-capacity value drive for bulk storage and archives on a budget.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 4 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Maxio MAP1602 |
| Memory type | YMTC 232-L TLC |
| DRAM cache | No |
| Sequential read | 7300 MB/s |
| Sequential write | 6800 MB/s |
| Random read IOPS |  |
| Random write IOPS |  |
| Endurance | 2800 TBW |
| MTBF | 2000000 |
| Warranty | 5 years |

## Performance

The S800 4 TB is rated at 7,300 MB/s sequential reads and 6,800 MB/s writes over PCIe 4.0, figures shared across the line. No reliable random-IOPS figure is published for the drive, and the manufacturer rates the same peak throughput across all capacities.

Real-world results trail the rating, as is typical for budget DRAM-less drives on the Maxio MAP1602 platform. Writes run at full speed inside the SLC cache until it fills, then settle to the native TLC rate; the 4 TB's large cache absorbs the longest sustained transfers of the line before slowing. Reads, by contrast, stay close to the rating in everyday use.

For gaming and everyday use the difference is hard to notice. Game load times are bounded by the CPU and asset decompression once a drive clears about 3,000 MB/s, so the S800 feels as quick as a faster-rated drive in practice. The 4 TB's advantage is capacity and write headroom, holding a massive game library or media archive on one drive. Large sustained transfers and heavy write workloads are where the budget DRAM-less design shows; for a storage-heavy build that rarely matters. It runs cool enough under light use, though sustained writes benefit from a motherboard heatsink.

## Endurance, TBW & Warranty

Fanxiang covers the S800 4 TB with a five-year limited warranty, a strong term for a budget drive. Endurance is rated at 2,800 TBW on this model, the highest in the line, which at a heavy 100 GB per day of writes equates to roughly 77 years, so the flash will outlast the warranty in any realistic workload. The rating scales with capacity, from 700 TBW on the 1 TB through 1,400 TBW on the 2 TB up to this 2,800 TBW figure, which johnnylucky corroborates for the line at 2.8 PBW. Fanxiang rates the drive at around 2 million hours MTBF, a population statistic describing expected failures across a fleet rather than a guarantee for any single unit. Returns are handled through the retailer or Fanxiang depending on region, and the drive ships without a heatsink, so motherboard M.2 cooling is recommended.

## Pros and Cons

**Pros:**

- 4 TB capacity on a budget Gen4 drive
- Up to 7,300 MB/s rated reads
- YMTC 232-layer TLC NAND
- 2,800 TBW endurance rating
- Five-year limited warranty term
- Large SLC cache absorbs long sustained writes
**Cons:**

- DRAM-less; real-world writes trail the rating
- Double-sided PCB may not fit thin laptops
- Budget brand, limited review coverage
- No published random-IOPS figure


## Verdict

Buy the Fanxiang S800 4 TB for a budget build that needs a large game library, media archive, or project cache on a single PCIe 4.0 drive, with 2,800 TBW of endurance and a five-year warranty for well under flagship money. Skip it when only a fast boot drive is needed, since the 1 TB or 2 TB is more than enough and the 4 TB's double-sided PCB may not fit thin laptops, or when brand familiarity matters, where the Crucial P310 4 TB is the safer pick. The natural rivals are the Crucial P310 4 TB and Crucial P3 4 TB, both budget options. We rate the 4 TB S800 a reasonable large-capacity value drive for bulk storage and archives on a budget.

## Frequently Asked Questions

### Is the Fanxiang S800 4 TB good for gaming?

Yes, and its real gaming virtue is capacity. The S800 4 TB holds a massive game library on a single drive, which is the main reason a gamer would choose it. Load times are bounded by the CPU and asset decompression once a drive clears about 3,000 MB/s, so the 7,300 MB/s rating will not visibly speed up games next to a cheaper Gen4 drive. What you get is one drive instead of two, a large SLC cache, and 2,800 TBW of endurance. For a high-capacity budget gaming build it is a strong, practical pick.

### Is the Fanxiang S800 4 TB compatible with the PS5?

It meets Sony's speed requirement but is not a recommended console upgrade because it ships without a heatsink. Sony requires an M.2 NVMe SSD with at least 5,500 MB/s reads and dimensions up to 110 by 25 by 11.25 mm including a heatsink; the S800's 7,300 MB/s rating clears the speed bar and the 4 TB capacity is generous, but the drive comes bare and a heatsink that fits the PS5's slot must be added. For a console, a drive bundled with a suitable cooler is the simpler, safer choice.

### Does the Fanxiang S800 have a DRAM cache?

No. The S800 is a DRAM-less design that uses the Host Memory Buffer (HMB), borrowing a small portion of system RAM to hold the flash translation layer. This keeps the drive affordable, but it depends on system memory more than a DRAM-equipped module. In practice the impact shows mainly in sustained writes and heavy mixed workloads, where a DRAM-equipped drive holds higher throughput; for everyday booting, gaming, and file transfers the difference is hard to notice.

### What is the TBW endurance of the Fanxiang S800 4 TB?

The 4 TB S800 is rated at 2,800 TBW, the highest figure in the line. At a heavy 100 GB per day of writes that works out to roughly 77 years, so the flash will outlast the five-year warranty in any realistic workload. The rating scales with capacity, from 700 TBW on the 1 TB through 1,400 TBW on the 2 TB. For a 4 TB archive or scratch drive, 2,800 TBW is a generous, write-friendly rating for a budget model.

### Does the Fanxiang S800 need a heatsink?

Not for light everyday use, but a heatsink is recommended for sustained workloads. The S800 ships without one, and like most budget DRAM-less drives it runs cool under normal use, so a bare install in a well-ventilated case is fine for booting and gaming. Under long sustained writes the controller warms up, and a motherboard M.2 heatsink keeps performance from thermal-throttling. On a 4 TB drive with more NAND in play, the included motherboard cooler is worth fitting.

### Is the Fanxiang S800 4 TB good for video editing?

It is usable for 4K editing on a budget, and the 4 TB capacity is a strong fit for footage and project archives. The drive's rated 7,300 MB/s reads are fine for scrubbing 4K timelines, and the large SLC cache handles sustained captures and renders well before dropping to the native TLC rate. For serious video work a DRAM-equipped drive holds higher sustained throughput, but for editors on a budget the 4 TB S800 offers a lot of space and endurance for the money.

### How does the Fanxiang S800 4 TB compare to the Crucial P310 4 TB?

Both are DRAM-less budget PCIe 4.0 drives with similar real-world performance. The S800 is rated a touch higher on peak reads at 7,300 MB/s versus the P310's 7,100 MB/s, and it offers a five-year warranty, while the Crucial has a more established brand and broader review coverage. The S800's 2,800 TBW endurance is unusually generous for a budget drive. For most budget buyers the Crucial is the safer, better-documented choice; the S800 is worth considering where it is cheaper.

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Last updated: 2026-08-17. Source: https://ssdrive.net/fanxiang-s800-4-tb