Which statement accurately describes the architectural advantage of NVMe over older storage interfaces?

• A. NVMe relies on SATA for queues.
• B. NVMe uses many queues and parallelism to deliver high throughput and low latency.
• C. NVMe drops support for PCIe.
• D. NVMe requires traditional spinning disks.

Answer: (B)

NVMe’s strength comes from its ability to handle a vast amount of I/O in parallel using multiple queues. It provides many submission queues and corresponding completion queues, so the CPU and storage controller can issue and finish thousands of commands at once. Placing this on PCIe gives access to high-bandwidth, low-latency interconnects, letting each core or thread work with its own queues without the bottlenecks of a single serialized path. This architectural setup reduces overhead and latency while increasing I/O operations per second, which is why NVMe outperforms older interfaces designed around a single queue and a rigid, SATA/AHCI-based path. The other statements don’t fit because NVMe runs over PCIe, it does not rely on SATA for queues, it does not drop PCIe support, and it is optimized for solid-state drives rather than traditional spinning disks.