Comment by sjolsen

11 years ago

Was that through technical failing, or was the project just mismanaged into the ground like the Alpha? Or was it killed by AMD's backward-compatible 64-bit architecture?

Itanium failed to deliver on its basic promise: the simple in-order VLIW design was intended to be much easier to implement in hardware than the complex out-of-order RISC designs with long pipelines that everybody else (including Intel x86/AMD64) was doing, but then the various actual Itanium CPUs were notorious for being released years later than initially announced, and due to the delays the available out-of-order RISCs were usually much faster.