Which is the best choice, pae or x64?

[Christopher Chan]

Rofail Qu wrote:
> Inter Core2 Duo E8400 CPU @ 3.00GHz

I'd go for x64 because I am not sure how good the iommu unit on the 
E8400 is in 32-bit PAE mode. Without a iommu, PAE will incurred 
performance penalties due to having to use bounce bufferes.


> 
> 2010/9/25 Christopher Chan <christopher.chan at bradbury.edu.hk>:
>> 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?
>>