Bill gates invented the procesor chip. how many times faster did that make the processing in the computer? also, in 1968 a PC read and?

stored 140,000 words in 4.5 microseconds. how much faster are they now?
Update: okay, if bill gates didnt invent the processor. then tell me this anyway: how much faster is the read and wrote speed of the computer now in year 2019 since the year 1968?
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