SSK M.2 NVMe SSD 4TB PCIe Gen4 x4 - High-Speed Internal SSD

In this review the SSK M.2 NVMe SSD 4TB proves to be a compelling internal drive for users who need very high sequential speeds and large capacity. The single biggest reason to consider it is raw throughput: with a PCIe Gen4 x4 interface and NVMe 2.0 support the drive targets up to 7400 MB/s read and 6500 MB/s write, which materially reduces load and transfer times for games and large project files. Installation is simple thanks to the single-sided M.2 2280 design and the included graphene heatsink helps maintain performance during sustained use.

Key Features

• Blazing transfer speeds: Up to 7400 MB/s read and 6500 MB/s write for noticeably faster game loads and file transfers compared with SATA drives.
• NVMe 2.0 and PCIe 4.0 x4: Modern protocol and interface ensure the drive can reach Gen4 performance in compatible motherboards and laptops.
• Large usable capacity: The 4TB nominal capacity provides lots of room for games, media, and projects, with the note that Windows may report about 3815 GB due to different GB calculation methods.
• Thermal management: The integrated graphene heatsink reduces thermal throttling during heavy workloads for steadier sustained speeds.
• Endurance and flash type: Built with TLC 3D NAND and rated for 2400 TBW to handle frequent writes over its service life.
• Low power and DRAM-less design: DRAM-less architecture and Host Memory Buffer support lower power draw while retaining good responsiveness.

Who It's For

The SSK 4TB NVMe is best for gamers, content creators, and professionals who have a PCIe 4.0 x4 M.2 slot and need fast sequential throughput for large assets and quick level or project loads. It is also a strong choice for users upgrading laptops with a single-sided M.2 2280 slot where space and heat management matter.

Those who should look elsewhere include people with systems limited to PCIe 3.0 or older interfaces where the drive cannot reach its top speeds, and users who need built-in hardware encryption or an onboard DRAM cache for particular database workloads may prefer drives with different internal designs.

Pros & Cons

Pros

• Very high sequential read and write performance for demanding transfers and game loads.
• Large 4TB capacity with TLC 3D NAND and a 2400 TBW endurance rating for heavy use.
• Single-sided 2280 design and included graphene heatsink make installation and thermal handling straightforward.
• Supports S.M.A.R.T. and TRIM for health monitoring and sustained responsiveness.

Cons

• Will not reach advertised Gen4 speeds in PCIe 3.0 slots or lower-speed enclosures, so platform compatibility is essential.
• DRAM-less design may be less suited to some specialized server use cases compared with DRAM-equipped enterprise SSDs.

Specifications

Form factor	M.2 2280 single-sided
Interface	PCIe Gen4 x4, NVMe 2.0
Sequential speeds	Up to 7400 MB/s read, up to 6500 MB/s write
Capacity	4 TB (note: Windows may report ~3815 GB)
Flash type	TLC 3D NAND
Endurance	2400 TBW
Cooling	Integrated graphene heatsink

Our Verdict

The SSK M.2 NVMe SSD 4TB is a strong value for users with a PCIe 4.0 x4 slot who need very fast sequential performance and lots of storage. Its TLC NAND, solid endurance rating, single-sided layout, and graphene heatsink make it a practical upgrade for gaming rigs and creative workstations, provided the host supports NVMe 2.0 and Gen4 lanes.

Frequently Asked Questions

Will I see the full 4 TB in Windows?
Windows typically reports about 3815 GB because it uses 1 GB = 1024 MB while drive manufacturers use 1 GB = 1000 MB; macOS may show the full 4 TB.

Do I need a special slot to get top speeds?
Yes, to reach up to 7400 MB/s you must install the drive in an M.2 PCIe 4.0 x4 slot that supports NVMe 2.0; older slots will reduce speeds.

Is the included heatsink necessary?
The graphene heatsink helps maintain steady performance under sustained workloads and is beneficial for compact systems with limited airflow.