What does it mean if a laptop has 5 Gbps speed?

That's not speed that's your RAM chip that is the chip that helps your processor to retrieve information off of your hard drive 5 gigs of RAM is a good number

It is probably some theoretical number under ideal lab conditions.

You're not confusing it with 5 Ghz, right? 5 Ghz Wi-Fi is what I assume you meant.

doesnt mean ****. false advertising. thats just hard drive or solid state drive file transfer speed