Late models of Pentium 4 can run 64-bit OS, as I understand. How to detect compatibility of my Pentium 4 processor with 64-bit OS?

I have following output for sudo lshw -C processor

 *-cpu description: CPU product: Intel(R) Pentium(R) 4 CPU 3.00GHz vendor: Intel Corp. physical id: 4 bus info: cpu@0 version: 15.3.4 serial: 0000-0F34-0000-0000-0000-0000 slot: J2E1 size: 3GHz capacity: 3060MHz width: 32 bits clock: 200MHz capabilities: boot fpu fpu_exception wp 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 constant_tsc pebs bts pni dtes64 monitor ds_cpl cid xtpr configuration: id=1 *-logicalcpu:0 description: Logical CPU physical id: 1.1 width: 32 bits capabilities: logical *-logicalcpu:1 description: Logical CPU physical id: 1.2 width: 32 bits capabilities: logical

Output for cat /proc/cpuinfo

processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 3
model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
stepping : 4
microcode : 0x17
cpu MHz : 3000.141
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fdiv_bug : no
f00f_bug : no
coma_bug : no
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 mmx fxsr sse sse2 ss ht tm pbe constant_tsc pebs bts pni dtes64 monitor ds_cpl cid xtpr
bugs :
bogomips : 6000.28
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 32 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 3
model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
stepping : 4
microcode : 0x17
cpu MHz : 3000.141
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
apicid : 1
initial apicid : 1
fdiv_bug : no
f00f_bug : no
coma_bug : no
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 mmx fxsr sse sse2 ss ht tm pbe constant_tsc pebs bts pni dtes64 monitor ds_cpl cid xtpr
bugs :
bogomips : 6000.28
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 32 bits virtual
power management:

0

2 Answers

Your processor appears to be this Pentium 4 according to Intel's ARK.

If the ARK is to be believed (and this is your processor), your CPU will not support 64-bit Ubuntu. You will be required to install 32-bit Ubuntu.

If the output of this command shows lm then your CPU is 64 bit

 grep -o -w 'lm' /proc/cpuinfo | sort -u 

so doing this on your above output tells me your CPU is not 64 bit