The HP FX900 is a solid-state drive in the M.2 2280 form factor, launched in 2022. It is available in capacities ranging from 256 GB to 2 TB. This page reports specifications for the 512 GB variant. With the rest of the system, the HP FX900 interfaces using a PCI-Express 4.0 x4 connection. The SSD controller is the IG5220 (RainierQX) from InnoGrit, a DRAM cache is not available. HP has installed 176-layer TLC NAND flash on the FX900, the flash chips are made by Micron. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are absorbed more quickly. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The FX900 is rated for sequential read speeds of up to 4,900 MB/s and 3,300 MB/s write; random IO reaches 545K IOPS for read and 501K for writes.
At its launch, the SSD was priced at 65 USD. The warranty length is set to five years, which is an excellent warranty period. HP guarantees an endurance rating of 200 TBW, a relatively low value compared to other SSDs.