32bit or 64bit
List of processors with 64-bit support
# AMD models
* Athlon64, Athlon FX, Athlon X2, Phenom, Semprons that use AM2/AM2+/AM3 socket, Turion64
More details here --> AMD64
# Intel models
* F and 5x1 series Pentium 4 using the "Prescott" core
* Pentium D
* Core 2 (Solo, Duo & Quad)
* Core i5 (all)
* Core i7 (all)
More details here --> Intel64
# VIA models
* Isiah
How to find If running linux Is 32 Or 64 Bit
Type the following command at the terminal, run:
$ uname -a
Output:
Linux ora100 2.6.5-7.252-smp #1 SMP Tue Feb 14 11:11:04 UTC 2006 x86_64 x86_64 x86_64 GNU/Linux
x86_64 GNU/Linux indicates that you've a 64bit Linux kernel running. If you use see i386/i486/i586/i686 it is a 32 bit kernel.
How Do I Find Out CPU is 32bit or 64bit?
Simply type the following command and if you see lm in output, you have a 64 bit CPU based system:
$ grep flags /proc/cpuinfo
Output:
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 pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
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 pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
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 pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
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 pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
CPU Modes:
- lm flag means Long mode cpu - 64 bit CPU
- Real mode 16 bit CPU
- Protected Mode is 32-bit CPU