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Fikwot FX660 4TB specifications and in-depth review

Fikwot FX660 4TB

Manufacturer: Fikwot

The Fikwot FX660 4TB is an M.2 NVMe solid-state drive aimed at users who need high-capacity internal storage without relying on a heatsink or RGB lighting. Built around the Realtek RTS5766 controller, it operates over a PCIe 4.0 interface and carries NVMe version 1.4 compliance, reflecting a reasonably modern architectural foundation for this class of drive.

On the technical side, the FX660 4TB delivers sequential read speeds of 5000 MB/s and sequential write speeds of 4700 MB/s. Storage is handled through QLC NAND with no onboard SSD cache, spread across four controller channels. The drive holds 4000GB of usable capacity, operates at a maximum temperature of 70°C, and is covered by a five-year warranty period.

Pros
  • Sequential read speed of 5000 MB/s and write speed of 4700 MB/s indicate strong throughput for large file transfers
  • 4000GB of storage capacity suits users who need substantial internal space
  • PCIe 4.0 interface with NVMe 1.4 support reflects a modern connection standard for this drive class
  • Five-year warranty period provides extended coverage for long-term use
  • M.2 form factor allows for a compact, cable-free installation in compatible systems
Cons
  • QLC NAND typically delivers lower endurance and write consistency compared to TLC or MLC alternatives
  • No onboard SSD cache, which can affect sustained write performance under heavy workloads
  • Absence of an integrated heatsink may require users to manage thermals independently, especially near the 70°C operating ceiling
  • Four controller channels is a relatively modest channel count for a 4TB drive, which may limit parallelism
Who is this for?

This drive is a reasonable fit for users who need large-capacity internal storage in a compact M.2 form factor, such as content creators, video editors, or data archivists who regularly move or store sizable files. The PCIe 4.0 interface with NVMe 1.4 support makes it compatible with modern desktop and laptop platforms where high sequential throughput is a practical advantage. The five-year warranty also suits those who want extended coverage for a primary or secondary storage role in a workstation or home server build.

Who is this NOT for?

Users running workloads that demand sustained heavy write performance — such as database operations, large-scale video rendering pipelines, or intensive virtual machine environments — may find the combination of QLC NAND and no onboard cache limiting over extended sessions. Similarly, this drive is not well suited to systems without adequate thermal management, as the absence of an integrated heatsink means the drive relies entirely on case airflow or platform cooling to stay within its 70°C operating limit. Enthusiasts seeking a drive for high-endurance or write-intensive tasks would likely find the QLC storage type a persistent constraint.

Read speed:

sequential read speed 5000 MB/s

The Fikwot FX660 4TB achieves a sequential read speed of 5000 MB/s, representing its peak throughput when reading large sequential data streams.

Write speed:

sequential write speed 4700 MB/s

The Fikwot FX660 4TB is rated for a sequential write speed of 4700 MB/s, reflecting its sustained throughput capacity when writing large blocks of data in sequence.

Benchmarks:

General info:

type M2
SSD cache None
Is an NVMe SSD ✓
NVMe version 1.4
internal storage 4000GB
controller Realtek RTS5766
SSD storage type QLC
PCI Express (PCIe) version 4
Controller channels 4
warranty period 5 years
Has an integrated heatsink ✕
maximum operating temperature 70 °C
has RGB lighting ✕

The Fikwot FX660 4TB uses an M.2 form factor and operates as an NVMe SSD under version 1.4, connected via a PCIe 4.0 interface with four controller channels managed by the Realtek RTS5766 controller. It offers 4000GB of internal storage built on QLC NAND and carries no onboard SSD cache. The drive does not include an integrated heatsink or RGB lighting, has a maximum operating temperature of 70°C, and is backed by a five-year warranty.

Final Verdict

The Fikwot FX660 4TB is a high-capacity M.2 NVMe drive that delivers on raw throughput, with sequential read speeds reaching 5000 MB/s over a PCIe 4.0 interface — making it a practical choice for users who prioritize storage volume and transfer speed in a modern system. Its five-year warranty and compact form factor add to its appeal for long-term desktop or workstation deployment. That said, the QLC NAND without onboard cache means sustained write-heavy workloads can expose the drive's endurance limitations, and the lack of an integrated heatsink places the thermal responsibility firmly on the host system. For general-purpose high-capacity storage, media archiving, or content workflows where peak sequential performance matters, the FX660 4TB serves its purpose well — provided users go in with a clear understanding of where QLC-based drives naturally draw the line.