John R Pierce
|| at Jan 28, 2009 at 10:16 pm
i am new to the x86 64 bit centos versions.
ive always used the 32 bit version on industrial type HP hardware
for those of you that are running x86 64 bit centos, other than specific
hardware issues, are you finding that 5.x centos is better than 4.x centos
for x86 64 bit processing?
does it matter in the amd vrs intel hardware differences what you choose to
use for centos version?
other things to make note of?
if i need to be more specific in the general-ness of the approach, please
let me know.
thanks in advance for feedback.
the first generation of Intel Xeon's (based on P4 Prescott) that
supported x86_64 were only slightly faster in 64bit mode than in 32bit
mode, while the AMD Opterons were considerably faster. the newer Intel
Xeons (based on Core2Duo) are quite a bit better.
the latest Intel CPUs are generally faster at most/many things than
AMD's CPUs, however, AMDs CPUs may still do better at scientific type
programming that can't take advantage of the SSE3/etc 'dsp' style
functions. Servers are as much a function of memory and IO bandwidth
as anything, so there's many factors.