Re: which version for intel chipset 64bit
Darac Marjal put forth on 2/8/2011 9:05 AM:
> IIRC, i386 should work fine whichever style of 64-bit it is. However,
> one of the reasons why Intel switched from IA64 to AMD64 was that IA64
> is terrible at executing 32-bit code.
You are woefully misinformed. First, IA64 Itanium is alive and well, although
market share is lower than Intel would like. Intel sells chips based on both
ISAs, x86-64 (Core, Xeon) and IA64 (Itanium) but into different markets.
Second, from the Itanium 2 Montecito core forward, hardware support for the IA32
instruction set was removed and replaced by a software emulator with much better
performance (though few, if any, customers use it).
The current IA64 chip, the Itanium 9300 (Tukwila) series was released in early
2010. The top model, the 9350 has:
4 cores @ 1.73/1.86 GHz
(unimpressive freq, but can execute up to 6 instructions/clock vs 2-3 for Core)
24 MB on die L3 cache
2-way HyperThreading (8 threads per chip)
2 DDR3 memory controllers 34 GB/s
QuickPath Interconnect 96 GB/s aggregate
It's a very modern chip with serious performance, especially on floating point
workloads, as has always been the case with Itanium.
Wikipedia has plenty of information on IA64/Itanium:
http://en.wikipedia.org/wiki/Itanium#Architecture
--
Stan
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