Performance & reliability
How much faster is NVMe than SATA SSD?
Short answer
Roughly five times the random IOPS — about 500,000 versus 90,000 — and around five times lower latency, under 0.1 ms versus about 0.5 ms. Sequential throughput is six to ten times higher. For database-backed applications the random-IOPS gap is the one you actually feel.
NVMe talks to the CPU over PCIe with a deep parallel queue model, while SATA inherits a single-queue protocol designed for spinning disks. The difference is architectural rather than incremental.
Against a mechanical drive the comparison stops being meaningful: a 7,200 RPM disk manages roughly 150 random IOPS. That is why we use HDD only on the Hold line, where the access pattern is large and sequential.
7 answers in Performance & reliability
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