This greatly depend on the type of software being used.
In general, x86-64 is faster in most applications due to the added GP (General purpose) registered available in 64bit mode.
However, 64bit applications tend to have bigger memory footprint; if your machine is low on RAM, 64bit may actually
Gilboa is pretty much on the mark here although their not totally identical.
As gilboa stated em64t implements sse3 instructions (while amd64
support sse2) and amd64 support the 3dNOW! instruction
They both return the same value in uname -m in most kernels so don't
let that confuse you.
A very comp
Gilboa Davara wrote:
Both should work but you may have very limited compatibility problems
with the x64-64 arch, as it was mostly tested on AMD Opterons.
Furthermore, when going x86_64 you may have recompile the kernel
in-order to gain (better) HT support.
Will there be performance differences b
EM64T == iAMD64 == AMD x86-64.
Intel "re-invented" the AMD x86-64 64bit extension and add it the Nocoma class Xeon/P4 CPUs.
(By reinventing I mean: Intel uses the same instruction set AMD64 has; The Nocoma further adds a couple of SSE3 related instructions.)
On Sun, 2005-02-06 at 10:44 +0200,
Erez Doron wrote:
hi
i have just bought a computer with xeon 64 3.Ghz HT.
You mean em64t, right? Not Itanium.
what distribution do i use: i386 or x86_64 ?
What is your distribution of choice? What flavour (for debian - sid or
stable?). Is this a desktop machine or a server?
Shachar
--
Sh
Both should work but you may have very limited compatibility problems with the x64-64 arch, as it was mostly tested on AMD Opterons.
Furthermore, when going x86_64 you may have recompile the kernel in-order to gain (better) HT support.
Hope it helps,
Gilboa
On Sun, 2005-02-06 at 10:26 +0200,
hi
i have just bought a computer with xeon 64 3.Ghz HT.
what distribution do i use: i386 or x86_64 ?
10x
erez.
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