The workings and specs of today's average SSD's

The  M.2 NVMe Interface Internal Solid State Drive with V-NAND Technology is the fastest drive you can get today beating the crap out of other common SSD's.
Something like this,

Although you will probably want to invest in some form of heat sink for it.

Also I was thinking of buying this one recently, actually still am.

https://www.sabrent.com/uploads/SB-ROCKET-1TB-Main-7-300x300@2x.jpg[/img]]https://www.sabrent.com/product/SB-ROCKET-1TB/1tb-rocket-nvme-pcie-m-2-2280-internal-ssd-high-performance-solid-state-drive/#description

The  M.2 NVMe Interface Internal Solid State Drive with V-NAND Technology is the fastest drive you can get today beating the crap out of other common SSD's.
Something like this,

Right ...

And it's not true SATA ...

Also, can the average older motherboard keep up?

No, older MB's are doomed.
Even this is just another of the baby steps allowed us. Even current shit will be obsolete soon. That is how they work for maximum profit, by having 10 years or more of development in the can and doling it out a dribble at a time.

Humm, I really screwed that post with the Sarbent up, it was supposed to just be the pic with an embedded link. Guess it's been a long time.

Haha ...
Yeah, just look at a cell phone from 3 years ago versus one today, and I agree with you ...