You'll have to check the math but how about something like:

"Modern processors can process more instructions in a month than there are seconds in the age of the universe."

Both Intel and AMD have processors which can process over 300,000 MIPS [1], that's 300 billion IPS.

Universe age in seconds = (13,820,000,000 * 365 * 24 * 60 * 60) = 4.35828E+17

instructions per day = (300,000,000,000 * 24 * 60 * 60) = 2.592E+16

Universe age in seconds / instructions per day = ~16.8 days to process as many instructions as there have been seconds

[1] https://en.wikipedia.org/wiki/Instructions_per_second