Well, based on home PC ram increase in the last 20 years (it seems to take about 15 years to go up by x1024, with PCs these days having from 1Gb (which isn't really enough) to 8Gb(if only to justify that 64bit OS

, few (any?) mobos support above this), so it will probably take about 20 years for the 36 Terabytes to seem "normal" for a PC (it's an odd number though, us computer nerds would expect it to be
32 Terabytes right?

). It's a good thing it specifically says RAM there, for storage we'll be into the 10's of Tb's in a decade.
Fortunately both the CPU count (since CPU count alone tells you little about how "powerful" a computer is) and the backup system (since it's just technobabble) are immune to the ravages of time.
Seriously though, only 512kb for the original Kitt? Even non IBM compat computers (commodores etc.) were within a factor of 10 of that within the shows life time.