That cpu was normally paired with the Intel 945 chipset that can’t support more than about 3.25GB whether or not it’s 32/64 OS
On Tue, Aug 3, 2021 at 7:24 PM <loushanguan2...@sina.com> wrote: > Thank Andy! my cpu is 32bit > i have thought pae can support more than 4G memory > but in fact it can't use full 4G memory hardware > > $ cat /proc/cpuinfo > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 28 > model name : Intel(R) Atom(TM) CPU N280 @ 1.66GHz > stepping : 2 > microcode : 0x218 > cpu MHz : 1000.000 > cache size : 512 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 : 10 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov > pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc > arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 xtpr > pdcm movbe lahf_lm dtherm > bugs : > bogomips : 3325.02 > clflush size : 64 > cache_alignment : 64 > address sizes : 32 bits physical, 32 bits virtual > power management: > > processor : 1 > vendor_id : GenuineIntel > cpu family : 6 > model : 28 > model name : Intel(R) Atom(TM) CPU N280 @ 1.66GHz > stepping : 2 > microcode : 0x218 > cpu MHz : 1667.000 > cache size : 512 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 : 10 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov > pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc > arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 xtpr > pdcm movbe lahf_lm dtherm > bugs : > bogomips : 3325.02 > clflush size : 64 > cache_alignment : 64 > address sizes : 32 bits physical, 32 bits virtual > power management: > > > >
