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 run slower...
As for WhiteBox/CentOS, I used them both on my x86-64 IBM Opterons and they worked just fine, greatly outperforming their 32bit variants.
However, as I said, YMMV.... (Your millage may vary...)
Gilboa
On Sun, 2005-02-06 at 11:53 +0200, Erez Doron wrote:
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 between the two (i.e. i386 vs. x86_64)? what do you mean by 'very limited compatibility problems' ps: I am thinking of using either white-box or CentOs > Hope it helps, > Gilboa > > On Sun, 2005-02-06 at 10:26 +0200, Erez Doron wrote: > >>hi >> >> >>i have just bought a computer with xeon 64 3.Ghz HT. >> >>what distribution do i use: i386 or x86_64 ? >> >>10x >>erez. >> >> >>================================================================= >>To unsubscribe, send mail to [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> with >>the word "unsubscribe" in the message body, e.g., run the command >>echo unsubscribe | mail [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> >> >> > -- > Gilboa Davara <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> >
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