The XPG Gammix S11 Pro is a solid-state drive in the M.2 2280 form factor, launched in 2019. It is available in capacities ranging from 256 GB to 2 TB. This page reports specifications for the 2 TB variant. With the rest of the system, the XPG Gammix S11 Pro interfaces using a PCI-Express 3.0 x4 connection. The SSD controller is the SM2262ENG from Silicon Motion, a DRAM cache chip is available. XPG has installed 64-layer TLC NAND flash on the Gammix S11 Pro, the flash chips are made by Micron. Please note that this SSD is sold in multiple variants with different NAND flash or controller, which could affect performance, the "Notes" section at the end of this page has more info. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are absorbed more quickly. The Gammix S11 Pro is rated for sequential read speeds of up to 3,500 MB/s and 3,000 MB/s write; random IO reaches 360K IOPS for read and 360K for writes.
At its launch, the SSD was priced at 250 USD. The warranty length is set to five years, which is an excellent warranty period. XPG guarantees an endurance rating of 1280 TBW, a typical value for consumer SSDs.