My 3+ years old Desktop PC with fastest SSD
ASUS MAXIMUS V GENE ROG Motherboard + Intel i7-3770 CPU + Samsung NVMe SSD 950 M.2 MZ-V5P512BW + PCI 3.0 x 4 to M.2 Adapter Benchmark
PCI 3.0 x 4 to M.2 Adapter installed in PCI Express 2.0 x4 slot [black]
PCI Express 2.0 x4 slot [black] cause Samsung NVMe SSD 950 M.2 MZ-V5P512BW bandwidth bottleneck
PCI 3.0 x 4 to M.2 Adapter installed in PCI Express 3.0 x8 slot [RED]
Samsung NVMe SSD 950 M.2 MZ-V5P512BW got full performance