The HP FX900 Pro is a solid-state drive in the M.2 2280 form factor, launched in 2022. It is available in capacities ranging from 512 GB to 4 TB. This page reports specifications for the 2 TB variant. With the rest of the system, the HP FX900 Pro interfaces using a PCI-Express 4.0 x4 connection. The SSD controller is the IG5236 (Rainier) from InnoGrit, a DRAM cache chip is available. HP has installed 176-layer TLC NAND flash on the FX900 Pro, 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 686 GB, once it is full, writes complete at 2600 MB/s. Copying data out of the SLC cache (folding) completes at 1750 MB/s. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The FX900 Pro is rated for sequential read speeds of up to 7,400 MB/s and 6,700 MB/s write; random IOPS reach up to 1344K for reads and 1122K 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. HP guarantees an endurance rating of 1200 TBW, a typical value for consumer SSDs.