Which is the best choice, pae or x64?

[Christopher Chan]

Rofail Qu wrote:
> My PC is x86 arch and has 4GB of mem.
> I tried,
> $ cat /proc/cpuinfo |grep lm
> flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
> pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc
> pebs bts pni dtes64 monitor ds_cpl cid xtpr lahf_lm
> flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
> pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc
> pebs bts pni dtes64 monitor ds_cpl cid xtpr lahf_lm
> 
> So, i think it support x64 as well.
> The question is, which kernel should i choose? The pae or x64?
> Which is the best choice? Why?
> Thanks.
> 

What cpu are you using?