The Silicon Power UD70 is a solid-state drive in the M.2 2280 form factor, launched on July 14th, 2020. It is available in capacities ranging from 500 GB to 4 TB. This page reports specifications for the 2 TB variant. With the rest of the system, the Silicon Power UD70 interfaces using a PCI-Express 3.0 x4 connection. The SSD controller is the PS5012-E12S-32 from Phison, a DRAM cache chip is available. Silicon Power has installed 96-layer QLC NAND flash on the UD70, 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 526 GB. Copying data out of the SLC cache (folding) completes at 200 MB/s. The UD70 is rated for sequential read speeds of up to 3,400 MB/s and 3,000 MB/s write; random IOPS reach up to 250K for reads and 650K for writes.
At its launch, the SSD was priced at 196 USD. The warranty length is set to five years, which is an excellent warranty period. Silicon Power guarantees an endurance rating of 530 TBW, a relatively low value compared to other SSDs.