LinuxQuestions.org - My CPU architecture?

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My CPU architecture?

Here is my machine /proc/cpuinfo output:

Code:

[root@localhost ~]# cat /proc/cpuinfo

processor        : 0

vendor_id        : GenuineIntel

cpu family        : 6

model                : 15

model name        : Intel(R) Core(TM)2 Duo CPU    T5800  @ 2.00GHz

stepping        : 13

cpu MHz                : 800.000

cache size        : 2048 KB

physical id        : 0

siblings        : 2

core id                : 0

cpu cores        : 2

apicid                : 0

initial apicid        : 0

fdiv_bug        : no

hlt_bug                : no

f00f_bug        : no

coma_bug        : no

fpu                : yes

fpu_exception        : yes

cpuid level        : 10

wp                : yes

flags                : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm

bogomips        : 3990.58

clflush size        : 64

power management:



processor        : 1

vendor_id        : GenuineIntel

cpu family        : 6

model                : 15

model name        : Intel(R) Core(TM)2 Duo CPU    T5800  @ 2.00GHz

stepping        : 13

cpu MHz                : 800.000

cache size        : 2048 KB

physical id        : 0

siblings        : 2

core id                : 1

cpu cores        : 2

apicid                : 1

initial apicid        : 1

fdiv_bug        : no

hlt_bug                : no

f00f_bug        : no

coma_bug        : no

fpu                : yes

fpu_exception        : yes

cpuid level        : 10

wp                : yes

flags                : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm

bogomips        : 3989.80

clflush size        : 64

power management:

Is it Core 2 Duo? How can one know that?

Quote:

Is it Core 2 Duo?

It's.

Quote:

model name : Intel(R) Core(TM)2 Duo CPU T5800 @ 2.00GHz

"Intel(R) Core(TM)2 Duo CPU" tells you that.

Evo2.

Can anyone explain me what that means?

Your best option is to check the manufacturer's site and see the full specifications and eventually the differences between CPU families. Wikipedia has a good compendium about history of Intel microprocessors and the different releases. Here is yours on the Intel site.

One thing to note from cpuinfo is the lm (long mode) flag, which clearly states it is a 64-bit processor.

try this from shell,

# dmidecode -t processor | grep Version

It's x86_64 a.k.a. AMD64 (yes, AMD64, even though it's made by Intel).

Quote:

Originally Posted by your_shadow03 (Post 3914200)

Can anyone explain me what that means?

That's a very vague question.

The answer Colucix posted is probably the best answer for such a vague question. But if you explain what you're really after, you might get a better answer.

Intel CPU model names, such as "Core 2 Duo" usually tell you very little about your CPU. The model ID's such as "T5800" tell you quite a lot (after you find some pages on Intel's web site, such as the one Colucix found, to tell you what "T5800" means).

Re, the subject line of your thread "My CPU architecture?", your CPU supports two different architectures: X86 and X86_64.

The lm flag Colucix mentioned is the most reliable indication that your CPU supports X86_64 architecture. That Intel web page also indicates all T5800's have "EM64T" which is Intel's name for X86_64. So that should also be a reliable indication.

Any CPU that supports X86_64 architecture also supports X86 architecture (that is part of the spec of X86_64).

So your installed Linux might be X86 or it might be X86_64 (you could find out with uname -a).