The XPG Gammix S60 is a solid-state drive in the M.2 2280 form factor, launched in 2024. It is available in capacities ranging from 512 GB to 2 TB. This page reports specifications for the 512 GB variant. With the rest of the system, the XPG Gammix S60 interfaces using a PCI-Express 4.0 x4 connection. The SSD controller is the PS5021-E21T from Phison, a DRAM cache is not available. XPG has installed 176-layer TLC NAND flash on the Gammix S60, the flash chips are made by SK Hynix. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are handled more quickly. The cache is sized at 50 GB, once it is full, writes complete at 750 MB/s. Copying data out of the SLC cache (folding) completes at 450 MB/s. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The Gammix S60 is rated for sequential read speeds of up to 4,700 MB/s and 1,700 MB/s write.
The SSD's price at launch is unknown. The warranty length is set to five years, which is an excellent warranty period. XPG guarantees an endurance rating of 110 TBW, a relatively low value compared to other SSDs.