64 bit is the way to go...

The server is up and running. It is a 64-bit Xeon with two processors.

[root@flowerhorn ~]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Xeon(TM) CPU 2.80GHz
stepping : 1
cpu MHz : 2800.216
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi m
mx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips : 5521.40
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Xeon(TM) CPU 2.80GHz
stepping : 1
cpu MHz : 2800.216
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi m
mx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips : 5586.94
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 48 bits virtual
power management:
[root@flowerhorn ~]#

Sorry. the info was cut a little bit here and there. The point here is, it has 2 cpus (see processor 0 and 1 and it is Xeon 2.8 Ghz)

Here is the memory info :

[root@flowerhorn ~]# cat /proc/meminfo
MemTotal: 1024604 kB
MemFree: 11644 kB
Buffers: 36896 kB
Cached: 259168 kB
SwapCached: 76 kB
Active: 778852 kB
Inactive: 174596 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 1024604 kB
LowFree: 11644 kB
SwapTotal: 2618552 kB
SwapFree: 2614760 kB
Dirty: 448 kB
Writeback: 0 kB
Mapped: 689168 kB
Slab: 27868 kB
CommitLimit: 3130852 kB
Committed_AS: 1189824 kB
PageTables: 11904 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 269992 kB
VmallocChunk: 34359468047 kB
[root@flowerhorn ~]#

MemTotal = Total memory (it is 1 GB)

Older Xeon processor is 32-bit. The latest one is 64-bit. I heard that AMD's Opteron is superior in benchmark of 64-bit CPU. If I need one more server, I will opt for Opteron. To take advantage of 64-bit CPU, one should install 64-bit OS and applications if they are available. That's what I did. I did install Mandriva 64-bit and Slamd64.

[root@flowerhorn ~]# uname -a
Linux flowerhorn.censored.org 2.6.12-12mdksmp #1 SMP Fri Sep 9 17:20:34 CEST 2005 x86_64 Intel(R)
Xeon(TM) CPU 2.80GHz unknown GNU/Linux
[root@flowerhorn ~]#

Come on guys. Take advantage. That's the key point here. :)