Larry,

It is an interesting video for sure. One large data bottleneck the video does not mention is the drive interface controller.

Older or entry level computers likely have a first generation SATA controller chip on the computer motherboard or drive interface card. First generation SATA has a top data transfer speed of 3 GB per second while the second generation transfer speed is 6 GB per second.

Storage memory installed in a PCIe or M.2 motherboard slot can have direct access to the motherboard and cpu data bus and achieve transfer speeds higher than 40 GB per second.

The Thunderbolt3 port interface and newest USB 3 port interface specifications both have 40 GB per second data transfer top ends.

My laptop motherboard has a first generation SATA controller so data transfer is limited to 3 GB even though the SSD can handle 6 GB.

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