# Fikwot FX991 4TB PCIe Gen4 NVMe SSD

Source: https://www.ranked10.co.uk/tech/best-4tb-ssd-for-ps5/fikwot-fx991-4tb-ssd
Ranked #7 in "Best 4TB SSD for PS5: 10 Ranked, and the Speed Numbers That Don't Add Up": https://www.ranked10.co.uk/tech/best-4tb-ssd-for-ps5

- Price: £429.99 (checked on Amazon UK on 2026-09-15)
- Amazon rating: 4.4 from 2,758 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0D4YDX9LQ?tag=ranked10-21

The Fikwot FX991 is a 4TB PCIe Gen4x4 M.2 2280 NVMe drive, seventh in this guide at £429.99. It is another entry where the headline number and the drive's own specification table do not agree with each other.

Fikwot's title and first bullet promise up to 7,300MB/s read and 6,300MB/s write. The spec table on the same listing gives a Read Speed of 7,000MB/s and a Media Speed of 6,200MB/s — 300MB/s lower on reads and 100MB/s lower on writes, inside one advert. The same table lists a Cache Memory Installed Size of 4TB, which is the drive's own capacity rather than a cache figure. The price, the 4.4 rating from 2,758 ratings and the 2,400TBW endurance figure all come from Fikwot's Amazon listing, and so does everything else on this page — we have not tested the drive ourselves.

## Specification

| Field | Value |
|---|---|
| Price | £429.99 |
| Amazon rating | 4.4 out of 5, from 2,758 ratings |
| Read speed in the title and bullets | Up to 7,300MB/s |
| Read speed in the spec table | 7,000MB/s (as listed) |
| Write speed in the bullets vs the spec table | 6,300MB/s vs 6,200MB/s |
| Capacity and interface | 4TB, PCIe Gen4x4, M.2 2280 |
| Endurance | 2,400TBW |
| Box contents | High-conductivity graphite heatsink |

## Questions people ask

**How fast is the Fikwot FX991 4TB?**

Fikwot's title and bullets give up to 7,300MB/s read and 6,300MB/s write. The spec table on the same listing shows a Read Speed of 7,000MB/s and a Media Speed of 6,200MB/s.

**Does the Fikwot FX991 work in a PlayStation 5?**

The listing ticks Sony PlayStation 5 under Compatible Video Game Console Models and says the FX991 can be used as PS5 storage expansion. It uses PCIe Gen4x4, the interface the console's M.2 slot takes.

**How much storage does the FX991 4TB give you?**

4TB, in an M.2 2280 form factor. The spec table also lists a Cache Memory Installed Size of 4TB, the same figure as the drive's own capacity (as listed).

**How long is the Fikwot FX991 rated to last?**

Fikwot quotes 2,400TBW endurance for the 4TB drive, and claims up to 40% better performance-per-watt than its previous Gen4 SSD.

**Does the Fikwot FX991 come with a heatsink?**

Yes. Box Contents on the listing is a high-conductivity graphite heatsink.

**What do buyers say about the Fikwot FX991?**

The listing holds 4.4 out of 5 from 2,758 ratings, with 76% of those five stars and 9% one star.