Will arm take over x86?

ARM does not have any performance advantage over x86. ARM does not have any energy advantage over x86. Pay attention to energy, not power.

Why is x86 so bad?

x86 is a CISC machine. For a long time this meant it was slower than RISC machines like MIPS or ARM, because instructions have data interdependency and flags making most forms of instruction level parallelism difficult to implement.

Why doesn’t AMD make x86 processors?

That didn’t fly, either. So they made a new licensing agreement that allowed AMD to develop x86 processors of their own, as long as they used no Intel IP outside of the x86 instruction set itself. Later on, they took away AMD’s ability to use Intel sockets, which is why the K6 series is the last AMD CPU line that could work in an Intel socket.

Is it possible to own x86?

It is not clear that you can actually own x86 in a way that prevents others from implementing it. Intel can have a copyright on the layout of their actual physical IC, but that would not prevent someone from re-implementing the processor based on its specifications. AMD did license some technology from Intel in the past, and they may still do that.

What happened to Intel’s x86 architecture?

Intel’s attempt to make a new 64-bit microarchitecture to replace x86 crashed and burned; they called it Itanium, but it sank like the Itanic. Back in the 80s, Intel picked AMD as a second source supplier for their CPUs and gave them a license to use x86 indefinitely unless the company was bought by a larger corporate entity

What was the last AMD CPU that could work in Intel?

Later on, they took away AMD’s ability to use Intel sockets, which is why the K6 series is the last AMD CPU line that could work in an Intel socket. AMD developed its own socket infrastructure for the Athlon and life went on.