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The Silicon Power A55 is a 512GB M.2 2280 SATA III solid state drive. It uses the older SATA interface rather than NVMe, so it tops out around 550 MB/s read and 500 MB/s write, well below any PCIe drive. Its case-less, 3.5 mm-thin design fits ultrabooks, tablets and mini PCs that have an M.2 slot but no NVMe support. It supports TRIM, NCQ, S.M.A.R.T., ECC, wear leveling and bad block management, and Intel Smart Response Technology for pairing with a hard drive. It is a budget upgrade for an aging machine, not a speed drive.
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Lowest price we've seen: $76.97 on Nov 11 at Amazon. Tracked across 1 store since Nov 11.
Owners generally treat the A55 as a cheap way to replace a hard drive in an older machine and report it works as expected for that. Enthusiasts note it is a SATA drive with modest sustained-write performance and should not be confused with NVMe.
The Silicon Power A55 is a 512GB internal solid state drive in the M.2 2280 form factor with a SATA III interface. It has a compact, case-less design for thin and small devices such as ultrabooks, tablet computers and mini PCs.
The drive supports Intel Smart Response Technology (ISRT). With ISRT, a small SSD can be paired with a large hard drive: frequently used applications are identified automatically and stored on the SSD, while the hard drive keeps its full storage capacity.
The A55 supports TRIM, NCQ and S.M.A.R.T. Built-in error correction (ECC), wear leveling and bad block management help keep the drive stable and reliable. Read and write performance varies with the system (hardware, software and interface mode) and the drive's capacity.
