<p>➀ The article reveals the internal details of the failure of Intel's Itanium processor;</p><p>➁ It discusses how Intel's insistence on releasing x64 versions of Itanium CPUs could have led to victory in the x86-64 domain over AMD;</p><p>➂ The article highlights the importance of backward compatibility in the PC market and how Itanium's pure 64-bit architecture hindered its market performance;</p><p>➃ It describes the role of former Intel Chief x86 Architect, Robert Colwell, in the development of the Pentium 4 CPU and the challenges he faced with Intel's management.</p>