FN955 4TB NVMe SSD M.2 2280 PCIe Gen4x4 - High-Speed Storage for PS5

In this review the FN955 4TB NVMe SSD is evaluated for users who need a large, fast internal drive for gaming, content work, or system storage expansion. The bottom line: it delivers a genuine capacity upgrade and very high sequential speeds thanks to PCIe Gen4x4 and NVMe 1.4 support, making it most valuable for users who prioritize rapid file transfers and shorter game load times. The drive's dynamic SLC cache and 3D NAND TLC flash are the main reasons to consider it over lower-tier flash options.

Key Features

• Up to 7300MB/s reads: The PCIe Gen4x4 interface and NVMe 1.4 protocol enable very fast sequential read performance for quicker game loads and large file transfers.
• High write performance: With write speeds up to 6300MB/s under the drive's caching behavior, large writes and asset installs complete much faster than SATA or Gen3 SSDs.
• 3D NAND TLC flash: Uses original TLC memory tested for vibration and plug cycles to provide longer endurance compared with typical QLC alternatives.
• Dynamic SLC cache: The drive's SLC cache boosts real-world throughput during burst transfers and improves responsiveness for mixed workloads.
• Auto temperature control: Intelligent thermal and power management reduce heat at the source so the drive sustains performance under longer sessions.
• Five-year warranty: A multi-year warranty and round-the-clock technical support offer added confidence for primary system or console storage.

Who It's For

The FN955 4TB is aimed at gamers who need a PS5-compatible M.2 module or PC users who want a single, large NVMe volume for games, video projects, and large dataset work. Its high sequential speeds and SLC caching help reduce load and transfer times for heavy files and large game installations.

Because it is a high-capacity Gen4 drive, casual users who only need small system or backup storage, or those on older Gen3-only motherboards, should consider lower-cost Gen3 or SATA SSDs instead, since they will see less benefit from the full speed capability.

Pros & Cons

Pros

• Exceptional sequential read and write performance for a smoother large-file workflow.
• Large 4TB capacity lets users consolidate games and media on a single internal drive.
• Durable 3D NAND TLC and tested plug-cycle resilience suggest improved longevity.
• Included thermal management features and a supplied heat sink are helpful under load.

Cons

• Real-world sustained speeds depend on the SLC cache behavior and can vary in long, sustained writes.
• Users on older motherboards or who do not need 4TB may find the drive more capacity and speed than required for their needs.

Specifications

Form factor	M.2 2280
Interface	PCIe Gen4x4, NVMe 1.4
Capacity	4TB
Max sequential read	Up to 7300MB/s
Max sequential write	Up to 6300MB/s
Flash type	3D NAND TLC
Warranty	Five-year warranty

Our Verdict

The FN955 4TB NVMe SSD is a strong choice for gamers and creative professionals who need abundant internal storage and Gen4 speeds. Its combination of high sequential throughput, 3D NAND TLC endurance, and thermal management makes it a compelling value for anyone wanting to consolidate large libraries or speed up heavy file workflows while keeping long-term reliability in mind.

Frequently Asked Questions

Is this drive compatible with PS5?
The drive is designed for PS5 memory expansion use and is compatible when installed in a supported M.2 slot with proper cooling.

How hot does it run under load?
It includes auto temperature control and power efficiency management to limit heat generation, but actual operating temperature will depend on your system ventilation and whether a heatsink is fitted.

What operating systems are supported?
It supports modern PC environments such as Windows 8/10/11 and is compatible with desktops and laptops that provide M.2 PCIe Gen4 slots.