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[ExtremeTech] Intel announces plans to merge Itanium and Xeon - Page 2

post #11 of 13
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Quote:
Originally Posted by coachmark2 View Post

From what the other IT guys say, the reason we never used the Itanium that much is because most apps that we need to run are 32-bit encoded and the Itanium Servers just eek.gif at that.
It's not just 32-bit... it's a different instruction set.

Compilers and low-level programmers have to support it.

Quote:
Originally Posted by airbozo View Post

Not sure of the specifics any more, but the x86 instruction set is not as efficient as it could be with today's technology.
This has some info:
http://en.wikipedia.org/wiki/X86-64
x86 is CISC.... the world has came to the conclusion that RISC is more efficent.

Intel current x86 implementations internally decodes CISC into micro-ops which are more RISC-like. However, the decoders require transistor/power budget and x86 has odd sized registers.
Quote:
Originally Posted by mothergoose729 View Post

Did itanium ever really get of the ground? It was my understanding that it immediately flopped in the netburst days and never had a really had any kind of revival.
For 64-bit support, it was easier to migration to x86-64 (AMD64) rather than more to IA64.

Itanium does have more mission-critical features.... but Intel is adding these features into E7 Xeons (RAS).
Edited by DuckieHo - 11/15/12 at 12:32pm
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post #12 of 13
ah yes, the AMD64 days, beautiful days where all we did was make fun of Intel for droppping the ball.

Too bad Conroe changed that rolleyes.gif

why would they even utilize the Itanium name?

Im sure no one would want it lol
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post #13 of 13
Quote:
Originally Posted by QuietlyLinux View Post

Please explain.

The way that the cpu instruction set we still use today has had so many additions and fudges to keep it up to date with technology, it isnt really as good as it could be.

A VERY basic way of seeing it

Imagine the heating system for hot water in a 6 level block of flats,
the way current cpu work is like living on the ground floor and getting your hot water from a boiler on the roof it has to pass through all the floors(the fudge) loosing effieciency as the instructions feed through the cpu

dropping all the old ways the cpu works would be like getting your OWN boiler...

See fudge at
http://en.wikipedia.org/wiki/X86-64
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