Seeing the market rejecting the incompatible Itanium processor and Microsoft supporting AMD64, Intel had to respond and introduced its own x86-64 processor, the Prescott Pentium 4, in July 2004. As a result, the Itanium processor with its IA-64 instruction set is rarely used and x86, through its x86-64 incarnation, is still the dominant CPU architecture in non-embedded computers.
Seeing the market rejecting the incompatible Itanium processor and Microsoft supporting AMD64 Intel had to respond and introduced its own x86-64 processor, the Prescott Pentium 4 ,in July 2004. As a result, the Itanium processor with its IA-64 instruction set i,s rarely used and x86, through its x86-64 incarnation, is still the dominant CPU architecture in non-embedded computers.