The Samsung 990 Evo Plus is a solid-state drive in the M.2 2280 form factor, launched on September 25th, 2024. It is available in capacities ranging from 1 TB to 4 TB. This page reports specifications for the 4 TB variant. With the rest of the system, the Samsung 990 Evo Plus interfaces using a PCI-Express 5.0 x2 connection. The SSD controller is the Piccolo (S4LY022) from Samsung, a DRAM cache is not available. Samsung has installed 236-layer TLC NAND flash on the 990 Evo Plus, the flash chips are made by Samsung. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are soaked up more quickly. Thanks to support for the fast PCI-Express 5.0 interface, performance is excellent. The 990 Evo Plus is rated for sequential read speeds of up to 7,250 MB/s and 6,300 MB/s write; random IOPS reach up to 1050K for reads and 1400K for writes.
At its launch, the SSD was priced at 345 USD. The warranty length is set to five years, which is an excellent warranty period. Samsung guarantees an endurance rating of 2400 TBW, a typical value for consumer SSDs.