Silicon Power Ace A55 SP004TBSS3A55S25 4 TB

A classic 2.5-inch solid-state drive with SATA3 connection, which stands out among other budget SSDs due to its impressive memory capacity of 4 TB. This solution is suitable for users who need large storage for multimedia files, backups, or replacing HDDs in systems where performance is not critical. The Silicon Power Ace A55 is based on 3D QLC NAND memory with high recording density, which allowed reducing the drive's cost while maintaining capacity.

The Silicon Motion SM2258XT controller is a simplified version of popular solutions—it is not equipped with a DRAM cache, which helps keep the price down, but may limit speed in scenarios with numerous small files or under high system load. Sequential read and write speeds reach 500 and 450 MB/s, respectively, providing a standard level of performance for SATA drives when booting OS, loading programs, and transferring large data. However, when writing large volumes of information for extended periods, speed drops may occur due to the specifics of QLC memory and lack of buffer. The declared resource is 1.5 million hours of mean time between failures. The device is supplemented with an official three-year warranty, meeting the requirements for consumer SSDs of this class.