GoKawiilNAND flash advances explain why SSDs outperform hard drives but still can't replace RAM
Modern flash storage relies on NAND memory cells that trap electrical charge, with newer 3D NAND designs stacking cells vertically and packing multiple bits per cell to boost capacity while lowering cost per gigabyte. These improvements have made flash ideal for SSDs and portable devices, since it lacks the moving parts of hard drives, giving lower latency and better durability. However, flash remains fundamentally different from RAM, serving as persistent storage rather than the fast temporary memory a system needs while running.
GoKawiil's interpretation of the reporting above, not reported fact.
As flash density improves, consumers get cheaper, faster, more durable storage in laptops, phones, and other portable devices, driving the industry away from spinning hard drives. Understanding the distinction between flash and RAM also helps clarify persistent confusion around terms like 'flash ROM,' since flash is rewritable and not read-only, and it's not a substitute for the temporary memory needed for active computing tasks.
- 3D NAND and multi-bit-per-cell designs (TLC, QLC) increase storage density and cut costs.
- SSDs outperform hard drives in speed and durability because they lack mechanical moving parts.
- Flash storage is not a substitute for RAM, despite being erasable and often mislabeled as 'flash ROM.'
Samsung 990 PRO NVMe SSD — If the article's description of that first snappy boot after an SSD upgrade rings true, this is the drive to do it with. Samsung's 990 PRO is an M.2 NVMe SSD built on 3D NAND, giving you fast, silent, mechanical-part-free storage for a laptop or desktop upgrade.
See Samsung 990 PRO NVMe SSD on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: engadget.com — Husain Parvez, 2026-08-28
Published there as: “The pros and cons of flash memory”
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