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Fikwot FX991 M.2 SSD 4TB NVMe SSD M2 2280 PCIe Gen 4x4, Read Up to 7000MB/s, Internal Solid State Drive for PS5 Laptop Desktop 3D QLC NAND
Fikwot

Fikwot FX991 M.2 SSD 4TB NVMe SSD M2 2280 PCIe Gen 4x4

Bottom line: The Fikwot FX991 M.2 SSD 4TB NVMe SSD M2 2280 PCIe Gen 4x4 ($499.98 on Amazon as of 2026-10-06): 4TB in one M.2 2280 slot: whole PS5 or Steam library, no swapping; main trade-off: 3D QLC NAND: writes slow once the SLC cache fills on big transfers.

$499.98

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 4TB in one M.2 2280 slot: whole PS5 or Steam library, no swapping
  • ✓ PCIe Gen 4x4 speeds up to 7000MB/s read, 6000MB/s write
  • ✓ Graphite heatsink keeps sustained reads near peak under load
  • ✓ 5-year limited service backed by a 2400TBW endurance rating

Cons

  • ✗ 3D QLC NAND: writes slow once the SLC cache fills on big transfers
  • ✗ DRAM-less design leans on host HMB, so speed varies by system
  • ✗ Fikwot is a lesser-known brand with a shorter support track record
  • ✗ PS5 needs its own heatsink clearance check before install

Manufacturer description

The Fikwot FX991 4TB is a PCIe Gen 4x4 NVMe SSD in the standard M.2 2280 form factor, rated for sequential reads up to 7000MB/s and writes up to 6000MB/s. Fikwot pairs 3D QLC NAND with Host Memory Buffer (HMB) and a dynamic SLC cache, so the drive borrows system DRAM for read/write buffering instead of carrying its own onboard cache. Thermals are handled by a high-conductivity graphite heatsink plus auto-adaptive temperature and power management, which keeps sustained reads near peak under load and reduces drain on laptop batteries. You also get TRIM, S.M.A.R.T. monitoring, and AES-256…

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SpecPicks Verdict

SpecPicks scored Fikwot FX991 M.2 SSD 4TB NVMe SSD M2 2280 PCIe Gen 4x4 using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Fikwot's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Does the Fikwot FX991 4TB work in a PS5?

Yes. Fikwot lists the FX991 4TB as compatible with PS5 storage expansion, along with laptops and desktops. It is a standard M.2 2280 drive with a graphite heatsink; confirm the heatsink fits your PS5 bay clearance before installing.

How fast is the Fikwot FX991 4TB?

It uses the NVMe protocol over PCIe Gen 4x4, with maximum sequential speeds of 7000MB/s read and 6000MB/s write. You need a Gen 4 M.2 slot to hit those figures; a Gen 3 slot will cap throughput lower.

Does the FX991 have DRAM cache?

No dedicated DRAM. It uses Host Memory Buffer (HMB), which borrows your system's DRAM for read/write caching, plus a smart SLC cache. That helps boot, multitasking, and game-asset loading, but performance depends on host HMB support.

What warranty does the Fikwot FX991 4TB come with?

Fikwot provides a limited service of up to 5 years or 2400TBW for the FX991 M.2 4TB, whichever comes first. Check the product listing for current terms and registration requirements in your region.

Is QLC NAND a problem for gaming?

For game loading, which is read-heavy, the 7000MB/s read rating matters most. The 3D QLC tradeoff shows up on large sustained writes once the SLC cache is exhausted, so expect slower speeds when transferring very large libraries at once.

Key Features

  • [Lightning-fast Top Performance]: Fikwot FX991 M.2 SSD 4TB adopts NVMe protocol and PCIe Gen 4x4 specifications, and the maximum read and write speed can easily reach 7000MB/s and 6000MB/s. With lightning-fast speeds, the FX991 NVMe SSD can make your computer's systems and applications respond quickly, improving work efficiency.
  • [Excellent Thermal Management]: FX991 NVMe SSD 4TB is equipped with Auto-adaptive temperature adjustment and power efficiency management. It can intelligently adjust the NVMe SSD heating temperature and power consumption control, which can reduces the burden on the device and extends the battery life of laptops and other devices. We have equipped M2 SSD 4TB with high-conductivity graphite heatsink. Under high load conditions, the internal ssd reading speed can still be close to the peak.
  • [HMB and SLC Cache]: With HMB and smart SLC cache, FX991 M.2 NVMe SSD can deliver outstanding performance. Host Memory Buffer (HMB) technology enables NVMe SSD to use the DRAM of the host system for read and write caching and buffering, significantly improving the speed of computer startup, multitasking, and game resource transfer and reading. At the same time, FX991 M.2 SSD also supports TRIM, S.M.A.R.T, AES-256 encryption and other technologies.
  • [Excellent Compatibility]: Whether it is a laptop, desktop computer or game console such as PS5, FX991 4TB SSD M.2 is perfectly compatible to meet your storage needs on various devices. FX991 4TB NVMe SSD can be used as a PS5 storage expansion, and you can easily upgrade your gaming experience with it.
  • [5-Year Service]: We are confident in the quality of our products, so we provide a limited service of up to 5 years or 2400TBW for the FX991 M.2 4TB SSD, so that you can enjoy excellent performance and reliability with confidence. Choose the top-performance FX991 M.2 2280 internal solid state drives to make your computing experience smoother and more efficient!

Full Specifications

BrandFikwot
ColorBlack
Model NameFX991_4TB
Read Speed7000 megabytes_per_second
Unit Count1 Count
Form FactorM.2 2280
Media Speed6200 megabytes_per_second
Model NumberFX991
CompatibilityPS5
Built-In MediaM.2 2280 NVMe SSD 4TB *1, Screw *1, Screwdriver *1
Hard-Drive Size4 TB
Number of Items1
Special FeatureBackward Compatible, Shock Resistant
Hardware PlatformPC
Installation TypeInternal Hard Drive
Compatible DevicesDesktop, Gaming Console, Laptop
Data Transfer Rate7000 megabytes_per_second
Enclosure MaterialPlastic
Additional FeaturesBackward Compatible, Shock Resistant
Hard Disk InterfacePCIE x 4
Full listing titleFikwot FX991 M.2 SSD 4TB NVMe SSD M2 2280 PCIe Gen 4x4, Read Up to 7000MB/s, Internal Solid State Drive for PS5 Laptop Desktop 3D QLC NAND

Ready to buy?

Fikwot FX991 M.2 SSD 4TB NVMe SSD M2 2280 PCIe Gen 4x4, Read Up to 7000MB/s, Internal Solid State Drive for PS5 Laptop Desktop 3D QLC NAND is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $499.98

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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Fikwot FX991 M.2 SSD 4TB NVMe SSD M2 2280 PCIe Gen 4x4, Read Up to 7000MB/s, Internal Solid State Drive for PS5 Laptop Desktop 3D QLC NAND
$499.98
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