What Intel Chipsets run 64bit Linux?
D. Hugh Redelmeier
hugh at mimosa.com
Mon Jun 4 18:55:21 UTC 2007
| From: <clemens at dwf.com>
| A very dumb question, but then having had a REAL 64 bit
| machine on my desk years ago (an alpha) Ive never been
| impressed with the Intel/AMD implementations of '64bit'.
Of course Intel owns the Alpha now. But I hear that a number of the
ideas and designers were used in the AMD chips.
| So, what Intel chip sets qualify to run 64 bit Linux.
I've heard that 64-bit mode is a tack on to the P4 design so it is
best avoided. In particular, 64-bit operations have to go through the
ALU twice. I have not verified this because I find the P4 generally
unattractive anyway.
The Intel Core does not implement 64 bit.
The Intel Core 2 does a good job of implementing 64 bit.
A Xeon is either a P4, Core, or Core 2 and behaves correspondingly
(old Xeons might be P3 or even P2, neither of which had 64 bit
support).
Itanium is 64 bit.
AMD does a good job of implementing 64 bit. Older Athlon (without 64
in their name) and Semprons don't implement it. I'm not sure how you
can tell whether a particular Sempron implements it.
Google and Wikipedia are your friends.
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