The Silicon Power US70 is a solid-state drive in the M.2 2280 form factor, launched on June 15th, 2020. It is available in capacities ranging from 1 TB to 2 TB. This page reports specifications for the 2 TB variant. With the rest of the system, the Silicon Power US70 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. Silicon Power has installed 96-layer TLC NAND flash on the US70, the flash chips are made by Toshiba. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are absorbed more quickly. The cache is sized at 333 GB. Copying data out of the SLC cache (folding) completes at 520 MB/s. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The US70 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 320 USD. The warranty length is set to five years, which is an excellent warranty period. Silicon Power guarantees an endurance rating of 3600 TBW, a good value.