TurboVS
Fikwot FX991 4TB specifications and in-depth review

Fikwot FX991 4TB

Manufacturer: Fikwot

The Fikwot FX991 4TB is a high-capacity M.2 NVMe solid-state drive built around the PCIe 5.0 interface, targeting users who need both substantial storage space and fast data throughput. It uses the Maxiotek MAP1602 controller paired with QLC NAND flash storage, and operates with an HMB (Host Memory Buffer) caching scheme rather than dedicated onboard DRAM. The drive carries a five-year warranty and achieves a PassMark score of 45,889 in benchmark testing.

On the performance side, the FX991 4TB is rated for sequential read speeds of 7300 MB/s and sequential write speeds of 6200 MB/s. It operates on NVMe version 1.4 and uses a four-channel controller configuration. The drive has a rated endurance of 2800 TBW and a maximum operating temperature of 70 °C. It does not include an integrated heatsink or RGB lighting, and hardware-level AES encryption is not supported on this model.

Pros
  • Sequential read speed of 7300 MB/s and write speed of 6200 MB/s reflect strong throughput for a PCIe 5.0 drive
  • 4000GB of internal storage provides substantial capacity for large file collections, games, or workloads
  • A TBW rating of 2800 terabytes indicates a solid endurance ceiling for sustained long-term use
  • The five-year warranty period offers meaningful long-term coverage
  • A PassMark score of 45,889 gives a concrete, measurable indication of real-world benchmark performance
  • Uses the PCIe 5.0 interface with NVMe 1.4, reflecting a current-generation connection standard
Cons
  • QLC NAND typically exhibits lower write endurance per cell compared to TLC or MLC storage types
  • No integrated heatsink is included, which may be a consideration for sustained workloads that generate heat
  • HMB caching relies on system RAM rather than dedicated onboard memory, which can affect consistency under heavy loads
  • Hardware-level AES encryption is not supported, limiting built-in data security options
  • The four-channel controller configuration may constrain parallelism compared to eight-channel alternatives
Who is this for?

This drive is well-suited to users who regularly handle large file transfers or data-intensive workloads, such as video editing, 3D rendering, or game library management, where the 7300 MB/s sequential read speed and 4000GB capacity can be meaningfully utilized. The PCIe 5.0 interface and current-generation NVMe 1.4 support make it a reasonable fit for those building or upgrading systems with modern high-bandwidth motherboards. The 2800 TBW endurance rating and five-year warranty also make it a practical choice for users who write data frequently and want a degree of long-term reliability assurance.

Who is this NOT for?

Users who require hardware-level AES encryption for data security — such as those in enterprise, compliance-driven, or sensitive data environments — will find this drive lacking, as that capability is entirely absent. Since no integrated heatsink is included, the drive may not be the best fit for sustained heavy workloads in thermally constrained systems where heat management is a concern. Additionally, users on platforms that do not support PCIe 5.0 will be unable to take full advantage of the drive's rated throughput, making it a poor match for older or budget-tier motherboard configurations.

Read speed:

sequential read speed 7300 MB/s

The Fikwot FX991 4TB is rated for a sequential read speed of 7300 MB/s, reflecting the sustained throughput the drive can deliver when reading large blocks of data in sequence.

Write speed:

sequential write speed 6200 MB/s

The Fikwot FX991 4TB supports a sequential write speed of 6200 MB/s, representing the rate at which the drive can sustain throughput when writing large, contiguous data sets.

Benchmarks:

PassMark result 45889

In benchmark testing, the Fikwot FX991 4TB recorded a PassMark score of 45,889, providing a standardized reference point for evaluating the drive's overall storage performance as measured by the PassMark benchmark suite.

General info:

type M2
SSD cache HMB (Host Memory Buffer)
Is an NVMe SSD ✓
NVMe version 1.4
internal storage 4000GB
controller Maxiotek MAP1602
SSD storage type QLC
PCI Express (PCIe) version 5
Controller channels 4
Terabytes Written (TBW) 2800
warranty period 5 years
Has an integrated heatsink ✕
maximum operating temperature 70 °C
bits of encryption supported 0
has RGB lighting ✕

The Fikwot FX991 4TB is an M.2 NVMe SSD operating on PCIe 5.0 with NVMe version 1.4, offering 4000GB of internal storage built on QLC NAND and managed by the Maxiotek MAP1602 controller across four channels. It uses HMB (Host Memory Buffer) as its caching mechanism in place of dedicated onboard memory. The drive is rated for a TBW endurance of 2800 terabytes and a maximum operating temperature of 70 °C, and it comes backed by a five-year warranty. Hardware-level AES encryption is not supported, and the drive includes neither an integrated heatsink nor RGB lighting.

Final Verdict

The Fikwot FX991 4TB is a current-generation M.2 NVMe SSD that brings together a PCIe 5.0 interface with 4000GB of storage capacity and a sequential read speed of 7300 MB/s, making it a capable option for users who need both high throughput and ample space in a single drive. Its 2800 TBW endurance rating and five-year warranty add a layer of long-term confidence, though the absence of hardware-level AES encryption and an integrated heatsink means it is better suited to general high-performance use cases than to security-sensitive or thermally demanding environments. For users with a compatible platform looking for a high-capacity PCIe 5.0 drive with solid benchmark credentials, the FX991 4TB represents a technically well-specified choice within its category.