Silicon Power A55 256GB SSD vs Timetec 256GB M.2 2280 SATA III SSD

Both are 256GB SATA SSDs with similar real-world speed, so the choice comes down to the slot in your machine. The Silicon Power A55 is a 2.5-inch drive that drops into any laptop or desktop with a standard SATA bay, and its 72 ratings at 5 stars back up its reputation for reliability. The Timetec is an M.2 2280 stick that needs an M.2 SATA slot, which many older laptops lack. Buy the A55 for a hard-drive swap in an older machine; buy the Timetec only if you have a spare M.2 SATA slot and want to skip cables.

• Choose the Silicon Power A55 if your laptop or desktop takes a 2.5-inch SATA drive and you are replacing an old hard drive.
• Choose the Timetec if your machine has an M.2 2280 SATA slot and you want a cable-free install.