SSD upgrade: How it boosts Mac performance

Your older Mac that has a hard disk drive (HDD) for data storage probably runs a lot slower now than when it was new. If you need a faster Mac, you can upgrade it with a solid state drive (SSD), the new standard in data storage. Learn why SSDs are better than HDDs.
They’re more reliable
Most consumer SSDs use NAND flash memory, a type of nonvolatile storage technology that doesn’t require power to retain data.