Linked by Eugenia Loli on Fri 13th Jan 2006 17:53 UTC
Apple The very first Apple computers, distributed nationwide in 1977, had a hood you could pry off to reveal the CPU, the memory, and the motherboard. But almost three decades later, the company that pioneered "open architecture" with the Apple II, even with thousands of admirers looking on, was reluctant to pry the back panel off its new Intel Core Duo-based iMacs and MacBook Pro portables.
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RE: 64-bit
by CrLf on Fri 13th Jan 2006 19:15 UTC in reply to "64-bit"
CrLf
Member since:
2006-01-03

You're wrong. The x86-64/amd64/EM64T architecture is as pure 64bit as a sparc64 or an alpha.

It is an extension to the x86 architecture only as far as using a similar instruction set and allowing 32bit apps to run from within 64bit mode. But it doesn't make it any less pure than the others (other "pure" 64bit architectures do the same, as they are usually an evolution of a 32bit one - sparc, for instance).

Reply Parent Score: 5

RE[2]: 64-bit
by rayiner on Fri 13th Jan 2006 20:10 in reply to "RE: 64-bit"
rayiner Member since:
2005-07-06

The K8 is a pure-64 bit chip. The Netburst 64-bit chips are only partially 64-bit. Their integer ALUs, in particular, do 64-bit operations in multiple clock cycles.

Reply Parent Score: 2

RE[3]: 64-bit
by CrLf on Sat 14th Jan 2006 04:31 in reply to "RE[2]: 64-bit"
CrLf Member since:
2006-01-03

That being true just makes the Intel implementation a bad implementation (we already knew it to be inferior to AMD's) but, from the software point of view, it is still a 64bit architecture on its own.

What I mean is, if the PAE was 64bit instead of 32bit, then it wouldn't be 64bit "pure".

But this is just fuzzy wording, the point is the x84-64 ISA is as 64bit as an Alpha (even in the inferior EM64T incarnation).

Reply Parent Score: 1