Windows Server 2008 R2 Last Version To Support Itanium
Ah, Intel's IA-64 architecture. More commonly known as Itanium, it can probably be seen as a market failure by now. Intel consistently failed to deliver promised updates, and clock speeds have lagged behind. Regular x86-64 processors have already overtaken Itanium, and now Microsoft has announced that Windows Server 2008 R2 is the last version of Windows to support the architecture.