What is 64 bits in IA 64?

[abhi]

Hello. I am new to parallel architectures. I want to know what is 64 bits in the IA64 architecture.
Is it the data bus, address bus, etc?

Thanks in advance...

[Gastón C. Hillar]

Hi abhi,

IA-64 is a 64 bits instruction used in the Itanium microprocessors. However, these microprocessors are used in high end servers.
AMD64 and EMT64-T (also known as x86-64) is a 64 bits extension instruction set used in x86-32 compatible microprocessors, like AMD Athlon 64 X2, AMD Phenom, Intel Core 2 Duo, Intel Core 2 Quad, Intel Core i7...
IA-64 instruction set is not compatible with x86-64. They are two different 64 bits instruction set.

Regards,

Gastón Hillar

[Gastón C. Hillar]

I forgot to include an hyperlink: http://www.intel.com/products/processor/itanium/index.htm
You can find a lot of information about the Itanium microprocessor there.

[Andrey]

Terminology. IA-64.
Terminology. 64-bit.