Is there any difference between x64 and x86-64 processors, or are they the same thing, just called differently?

Question

Iron

Didn't find anything on the Internet. I know how x86 differs from x64, but what else is x86-64?

Answer 1

When the need arose for a 64-bit CPU to appear on the market, the opinions of Intel and AMD on this matter were radically divided. Intel proposed IA64 technology which doesn't fit in with the old 32-bit x86 (which is 40 years old, however). AMD entered the market with AMD64 technology, which, at the expense of performance, retained x86 compatibility, which made it possible to directly execute old code on new processors. It is expected that the wonderful idea from Intel was not commercially successful and all consumer goods Intel releases according to the AMD64 standard, which Intel adherents bashfully call x64 or x86-64