Why Modern Code is Slow

Because of the entire security nonsense, modern linkers do not support the classic statically linked executables, which were superfast. So all code is compiled the PIE bloatware. Of course that crap goes on top of already slow MMU and meltdown/spectre fixes (which are just an excuse to sell your new CPU). Remember these old COM files? They were ridiculously fast, compared to the modern ELF garbage, where just the header takes more space than the code itself.

Remember: security experts are the consumer's biggest enemies. Common people don't care about security, they care only about apps running fast, liek they used to run in C64.

>>10

We wont ever see a THz CPU

https://www.extremetech.com/extreme/193343-darpa-creates-first-1thz-computer-chip-earns-guinness-world-record
As you can imagine, though, it’s hard to build a chip that’s capable of switching on and off one trillion times per second. That seems to be the main breakthrough here: DARPA, working with Northrop Grumann, have built a 10-stage monolithic amplifier using fairly standard CMOS processes. Exact details aren’t available, but I believe the chip is fabricated out of indium phosphide (InP), which is capable of switching at much higher frequencies (and at higher power levels) than common semiconductors such as silicon or gallium arsenide.
Official PR image for DARPA's World Record 1THz chip

Official PR image for DARPA’s World Record 1THz chip. Yup.

The DARPA/Northop chip reportedly has excellent properties, with a gain of 9dB at 1THz, and 10dB at 1.03THz. “Gains of six decibels or more start to move this research from the laboratory bench to practical applications — nine decibels of gain is unheard of at terahertz frequencies” says Dev Palmer, DARPA’s THz Electronics program manager. “This opens up new possibilities for building terahertz radio circuits.”