A test between a bit full M.2 NVMe SSD (NVM Express 1.2 - PCIe is 3.0) and a brand new Samsung 870 EVO, SATA III SSD. Surprisingly like old hard disk drives, NVMe drive seems to suffer from speed bumps when a bit full, so it is pretty much on par with SATA III drive, speedwise.

Hardware Specs:
i5 9400F, 16GB RAM (Crucial Ballistix DDR4 3000MHz), GeForce GTX 1660 (6GB)
256 GB NVMe M.2 SSD (8.75 TB storage space total)
Lenovo 32" 2K (1440p) IPS display.
Logitech G413 Keyboard. M705 Mouse.

Edited with Videopad by NCH Software.