SK hynix HFS001TEJ9X125N – 1TB PC801 PCIe 4.0 NVMe M.2 SSD

Description

The SK hynix HFS001TEJ9X125N is a member of the SK hynix PC801 SSD family, providing approximately 1TB of nominal storage capacity in a compact M.2 2280 design.

The drive uses a PCIe 4.0 x4 interface and NVMe protocol, providing substantially higher throughput and lower latency than SATA-based SSDs. Its M.2 2280 form factor makes it suitable for modern notebook computers, desktop systems, compact workstations, and other platforms equipped with a compatible PCIe NVMe M.2 slot.

SK hynix’s HFS001TEJ9X125N has been documented in Acer systems, including the Predator Helios Neo 14, where it is identified as a 1024GB M.2 2280 PC801 drive. Acer service documentation also lists the exact HFS001TEJ9X125N as a 1024GB M.2 2280 PC801 SSD.

Independent drive databases identify the model as an NVMe 1.4 SSD with a PCIe 4.0 x4 interface. A recorded firmware version is 51022A20, although firmware may vary by production batch or OEM system.

Benchmark databases report very strong real-world performance, with different test environments producing varying sequential read/write results. For example, Novabench reports average results around 6.83 GB/s read and 5.89 GB/s write, while PassMark samples show approximately 6.36 GB/s sequential read and 3.94 GB/s sequential write. These figures should be considered benchmark results rather than guaranteed manufacturer specifications.

3. Complete Technical Specification

Specification	Details
Manufacturer	SK hynix
Model / MPN	HFS001TEJ9X125N
Series	SK hynix PC801
Product Type	Internal Solid State Drive
Capacity	1TB / 1024GB nominal
Usable Capacity	Approximately 953.9 GiB depending on formatting/system allocation
Form Factor	M.2 2280
Interface	PCIe 4.0 x4
Protocol	NVMe
NVMe Version	NVMe 1.4
Interface Bandwidth	PCIe 4.0 x4
Drive Type	NVMe SSD
Firmware Example	51022A20
Maximum Recorded Interface Speed	Approximately 7,876 MB/s
Recorded Benchmark Read	Up to approximately 6.8 GB/s in independent testing
Recorded Benchmark Write	Up to approximately 5.9 GB/s in independent testing
Maximum Recorded Power Consumption	Approximately 7W
TRIM	Supported
HMB	Reported as not supported in tested firmware/database configuration
Operating Temperature	Platform/firmware dependent
Interface Connector	M.2 M-key PCIe NVMe
Intended Use	Laptop, desktop, workstation and compatible OEM systems
Manufacturer Brand	SK hynix

Performance note: The read/write figures above are independent benchmark observations and can vary according to system configuration, firmware, thermal conditions, workload, and benchmark methodology.

4. Applications

The HFS001TEJ9X125N is suitable for:

Laptop storage upgrades
Desktop PC storage
Professional workstations
Gaming systems
Content-creation systems
High-speed operating-system storage
Application and software storage
OEM replacement drives
High-performance data storage
Compatible PCIe 4.0 NVMe systems

5. Compatibility

The drive is intended for systems equipped with an M.2 2280 PCIe NVMe slot supporting PCIe 4.0 x4.

The exact HFS001TEJ9X125N has been documented in Acer Predator systems, including the Predator Helios Neo 14, and Acer’s service documentation identifies it as a 1024GB M.2 2280 PC801 SSD.

Compatibility should be confirmed against the host system’s specifications before installation. An M.2 slot that supports only SATA or a different physical/key configuration may not support this PCIe NVMe drive.