An HDD works like a precise “record player,” relying on spinning disks and moving read/write heads. An SSD, in contrast, functions more like a super-powered USB flash drive, using flash memory chips and a controller chip to access data rapidly through electrical signals.
Simply put, a SATA SSD is a solid-state drive that uses the SATA (Serial ATA) interface for data transfer. Most commonly, it appears as a 2.5-inch rectangle – similar in size to laptop hard drives (older mSATA models exist too).
A Portable Solid State Drive (PSSD) is an external storage device that uses NAND flash memory chips for storage, connects to devices via high-speed interfaces like USB or Thunderbolt, and provides high-capacity, high-performance data storage and transfer in a portable form factor.
A Solid State Drive (SSD) is a storage device that uses electronic chips instead of mechanical parts to store data. Its most fundamental difference from the familiar Hard Disk Drive (HDD) is that instead of moving parts, an SSD uses flash memory chips called “NAND Flash” to store information.
The worldwide DRAM market revenue is expected to grow significantly, reaching $133.4 billion in 2025, which is up 40% compared to the previous year. Leading memory manufacturers saw strong profit growth: SK Hynix operating profit surged 42.4% with a record 54% operating margin in Q1
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