The Teamgroup Cardea Zero Z440 is a solid-state drive in the M.2 2280 form factor, launched on October 9th, 2019. It is only available in the 1 TB capacity listed on this page. With the rest of the system, the Teamgroup Cardea Zero Z440 interfaces using a PCI-Express 4.0 x4 connection. The SSD controller is the PS5016-E16-32 from Phison, a DRAM cache chip is available. Teamgroup has installed 112-layer TLC NAND flash on the Cardea Zero Z440, the flash chips are made by Toshiba. Please note that this SSD is sold in multiple variants with different NAND flash or controller, which could affect performance, the "Notes" section at the end of this page has more info. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are handled more quickly. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The Cardea Zero Z440 is rated for sequential read speeds of up to 5,000 MB/s and 4,400 MB/s write; random IO reaches 750K IOPS for read and 750K for writes.
At its launch, the SSD was priced at 190 USD. The warranty length is set to five years, which is an excellent warranty period. Teamgroup guarantees an endurance rating of 1800 TBW, a good value.