Chess engine strength is not measured by now many positions it sees but rather by the quality of each position it sees due to better evaluation function.
8th gen i7 has less move per second than deep blue?

You are comparing the performance of a single 4-core CPU (the i7) with that of a supercomputer that runs 30 P2SC CPUs plus 480 special-purpose VLSI chess processors in parallel (Deeper Blue)?
Why doesn't my new slingshot hit harder than an assault rifle?
I bought an XPS 13 really powerful, I found a technical review where was mentioned the Fritz test:
Fritz is a chess benchmark that tests the computing capabilities of the CPU with various chess moves. The Intel Core i7-8550U managed to get 10.675 million moves per second. For comparison, one of the most powerful computers, Deep(er) Blue, was able to squeeze out 200 million moves per second. In 1997 Deep(er) Blue even beat the famous Garry Kasparov with 3.5 to 2.5.
But then I found this link that claims that even an iphone 5s would be almost better than deep blue
I am now confused, are maye deep blue and deeper blue different? And still I found reasonably that algorithms are more efficient today