The XPG Gammix S10 is a solid-state drive in the M.2 2280 form factor, launched in 2018. It is available in capacities ranging from 128 GB to 1 TB. This page reports specifications for the 512 GB variant. With the rest of the system, the XPG Gammix S10 interfaces using a PCI-Express 3.0 x4 connection. The SSD controller is the SM2260 from Silicon Motion, a DRAM cache chip is available. XPG has installed 32-layer TLC NAND flash on the Gammix S10, the flash chips are made by Micron. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are processed more quickly. The cache is sized at 25 GB, once it is full, writes complete at 500 MB/s. Copying data out of the SLC cache (folding) completes at 17 MB/s. The Gammix S10 is rated for sequential read speeds of up to 1,800 MB/s and 860 MB/s write; random IOPS reach up to 130K for reads and 140K for writes.
At its launch, the SSD was priced at 165 USD. The warranty length is set to five years, which is an excellent warranty period. XPG guarantees an endurance rating of 320 TBW, a typical value for consumer SSDs.