XPG GAMMIX S55 2TB PCIe Gen 4 x4 NVMe 1.4 M.2 2280 Internal SSD – Up to 5,000 MB/s Read, 3,200 MB/s Write, 3D TLC NAND Flash, SMI Controller, 5-Year Warranty

The XPG GAMMIX S55 2TB NVMe Gen4x4 SSD (Model: SGAMMIXS55-2T-C) is designed for users who require a balance of performance, reliability, and value. Leveraging the PCI Express 4.0 ×4 interface and NVMe 1.4 protocol, it delivers sequential read speeds up to 5,000 MB/s and sequential write speeds up to 3,200 MB/s, significantly outperforming SATA-based drives and offering near-instant responsiveness for gaming, design, and general computing workloads.

Built around a high-efficiency Silicon Motion controller paired with 3D TLC NAND flash, the GAMMIX S55 offers consistent throughput and excellent thermal behavior under sustained operation. The controller’s firmware features advanced LDPC ECC (Low-Density Parity-Check Error Correction) and End-to-End Data Path Protection to maintain long-term data integrity. Combined with Dynamic SLC Caching, it accelerates burst write operations while maintaining endurance across varied workloads.

The NVMe 1.4 interface brings architectural improvements in power management and queue efficiency, allowing the drive to maintain low latency and quick command processing. As a result, the S55 performs reliably in environments such as gaming PCs, creative workstations, and everyday laptops where fast boot times and application loading are critical.

This model uses the M.2 2280 form factor, making installation simple on both desktop motherboards and notebook platforms that support PCIe NVMe storage. It operates silently without moving parts, consumes minimal power, and generates less heat compared to mechanical drives, contributing to an overall efficient system build.

The endurance rating of the 2TB variant supports heavy daily use, providing extended reliability for users who frequently transfer or edit large files. The drive’s Mean Time Between Failures (MTBF) is rated at 2,000,000 hours, and it comes with a 5-year limited warranty.

The XPG GAMMIX S55 is suitable for use as a primary system drive, game storage disk, or content library in multimedia builds. Its mix of Gen 4 performance, compact footprint, and reliable NAND architecture makes it an ideal upgrade choice for users transitioning from older PCIe 3.0 or SATA storage solutions to modern NVMe 4.0 technology.