On 11/14/05, Andy Green <andy@xxxxxxxxxxx> wrote: > Gerhard Magnus wrote: > > > The only documentation I have is installation instructions for the Intel > > Pentium 4 processor that aren't very revealing (despite being in 15 > > This is a great question... everybody just assumes everybody knows. > > i386, i486, all the Penium *s are 32-bit Unfortunately, this is not true anymore. There are 64-bit Pentuim 4s out now, as well as 64-bit Celerons, I think. This makes things rather interesting. > AMD's Athlon 64 and Opteron, and Intel's Itanium are 64-bit Itaniums were a different type of 64-bit as well, using the IA64 architecture. Athlon64s and Opterons are x86_64 architecture (AMD64), a new 64-bit arch made to execute old x86 instructions as well as the new 64-bit extensions. IA64 seems to be all but dead now as x86_64 has caught on and been adopted by Intel as EM64T. Jonathan
