i have 6Gb of memory in my machine, and i'm running 64-bit kubuntu. the motherboard is an asus p5q, which, according to the dealer, is 64-bit compatible. there's 256Mb of memory on the graphics card. the output of lshw is the following (notice how it says 'width 32 bits' for the entire system, although both the memory and the cpu are listed as having 'width 64 bits'): box description: Desktop Computer product: System Product Name vendor: System manufacturer version: System Version serial: System Serial Number width: 32 bits capabilities: smbios-2.5 dmi-2.5 smp-1.4 smp configuration: boot=normal chassis=desktop cpus=4 uuid=E0A5FB01-54D0-DD11-8C6D-00248C031C33 ... *-cpu:0 description: CPU product: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz vendor: Intel Corp. physical id: 4 bus info: cpu@0 version: 6.15.11 serial: 0000-06FB-0000-0000-0000-0000 slot: LGA 775 size: 2400MHz capacity: 3800MHz width: 64 bits clock: 266MHz 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 nx x86-64 constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm configuration: id=1 ... *-memory description: System Memory physical id: 3a slot: System board or motherboard size: 6GiB *-bank:0 description: DIMM Synchronous 1066 MHz (0.9 ns) product: ModulePartNumber00 vendor: Manufacturer00 physical id: 0 serial: SerNum00 slot: DIMM0 size: 2GiB width: 64 bits clock: 1066MHz (0.9ns) *-bank:1 ...
