fanxiang S501Q SSD 1TB PCle 3.0x4

fanxiang S501Q SSD 1TB PCle 3.0x4 Review & Specifications

The fanxiang S501Q SSD 1TB PCle 3.0x4 by fanxiang is a NVMe solid-state drive (SSD) featuring 1000 GB of storage. It is built with 3D QLC NAND NAND flash memory and utilizes a Maxio MAP1202 controller to manage data access, wear leveling, and overall performance. Interface and NVMe standard details for this SSD are not specified. Please consult the product documentation or specifications for accurate interface compatibility and performance expectations.

NVMe SSD Performance

Sequential read and write speeds reach 3500 MB/s and 2000 MB/s respectively, while random read/write performance delivers up to 250k and 300k IOPS. The drive offers an endurance rating of 320 TBW and is backed by a 5-year manufacturer warranty.

This SSD does not include a dedicated external DRAM cache chip. Instead, it relies on a small internal SRAM cache integrated into the controller, typically around 32 MB to 128 MB. Manufacturers may sometimes refer to this SRAM as "DRAM cache," but it is not the same as a discrete DRAM module. Furthermore, because it uses the NVMe interface, the SSD may also support Host Memory Buffer (HMB) — a feature that allocates a small portion of your system’s RAM (usually 64–128 MB) to act as a substitute for DRAM. While this design is cost-effective and suitable for everyday tasks, performance under heavy or sustained random I/O can be lower compared to full-DRAM SSDs. A Dynamic SLC cache is still included to help with write bursts and improve responsiveness.

This SSD module offers entry-level performance in our synthetic benchmark, scoring 58.4% relative to the fastest NVMe SSDs in our database. However, this classification doesn't always reflect real-world capability. Many drives in this range — especially those with DRAM cache, and even some newer, efficient DRAM-less models — can still deliver responsive performance in general computing, gaming, light creative work, and casual development environments. Unless your workload involves large file transfers or sustained heavy I/O, this level of performance is more than adequate.

Cost-Effectiveness

From a cost-per-storage perspective, this SSD offers below-average value at $150.0 per terabyte. The overall combined performance-to-price ratio, which evaluates both maximum performance and total storage capacity per dollar, is calculated at 45.2%. Based on this metric, the drive is a less favorable value in this category. Considering its performance rating of 58.4%, other SSDs at similar or lower prices may deliver better overall performance and capacity per dollar, making this drive less competitive.