Which nvme -> pci-e adapter is faster?

Question

Solid State Drives

Does it make sense to buy a pci-e x16 adapter for an NVMe drive, or pci-e x4 is enough

Answer 1

In both adapters, only 4 lines are divorced.
It's just that the first one holds its weight due to the body strap, and the second one, due to the connector

Answer 2

If the drive is running at x4 speed, then x4 is enough. From x16, the performance gain will be zero percent.