What Intel Chipsets run 64bit Linux?

Kam Leo kam.leo at gmail.com
Mon Jun 4 19:06:50 UTC 2007


On 6/4/07, D. Hugh Redelmeier <hugh at mimosa.com> wrote:
> | 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.
>

I have a Sempron 2800+ and it is x64 capable. Most recent Semprons are
x64 capable.




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