Crucial's P1 is the company's very first NVMe SSD, but it is almost identical to the Intel SSD 660p we recently reviewed. Just like the 660p, the P1 features Micron’s latest 64-layer 3D QLC flash and a Silicon Motion NVMe SSD controller.

The P1 breaks the SATA 6Gb/s barrier with its NVMe interface and delivers sequential throughput of up to 2/1.7 GB/s read/write, but we found that its real-world application performance is similar to the company's SATA MX500 SSD. Coupled with higher-than-anticipated launch pricing, the P1 is a tough sell in the ultra-competitive SSD market.