最近我注意到 lshw 告诉我一件奇怪的事情。这是我的 lshw 输出的第一部分：
bpetit-1025c
description: Notebook
product: 1025C (1025C)
vendor: ASUSTeK COMPUTER INC.
version: x.x
serial: C3OAAS000774
width: 32 bits
capabilities: smbios-2.7 dmi-2.7 smp-1.4 smp
configuration: boot=normal chassis=notebook cpus=2 family=Eee PC...
*-core
description: Motherboard
product: 1025C
vendor: ASUSTeK COMPUTER INC.
physical id: 0
version: x.xx
serial: EeePC-0123456789
slot: To be filled by O.E.M.
*-firmware
description: BIOS
vendor: American Megatrends Inc.
physical id: 0
version: 1025C.0701
date: 01/06/2012
size: 64KiB
capacity: 1984KiB
capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd...
*-cpu:0
description: CPU
product: Intel(R) Atom(TM) CPU N2800 @ 1.86GHz
vendor: Intel Corp.
physical id: 4
bus info: cpu@0
version: 6.6.1
serial: 0003-0661-0000-0000-0000-0000
slot: CPU 1
size: 798MHz
capacity: 1865MHz
width: 64 bits
clock: 533MHz
capabilities: x86-64 boot fpu fpu_exception wp vme de pse tsc ...
configuration: cores=2 enabledcores=1 id=2 threads=2
*-cache:0
description: L1 cache
physical id: 5
slot: L1-Cache
size: 24KiB
capacity: 24KiB
capabilities: internal write-back unified
*-cache:1
description: L2 cache
physical id: 6
slot: L2-Cache
size: 512KiB
capacity: 512KiB
capabilities: internal varies unified
*-logicalcpu:0
description: Logical CPU
physical id: 2.1
width: 64 bits
capabilities: logical
*-logicalcpu:1
description: Logical CPU
physical id: 2.2
width: 64 bits
capabilities: logical
*-logicalcpu:2
description: Logical CPU
physical id: 2.3
width: 64 bits
capabilities: logical
*-logicalcpu:3
description: Logical CPU
physical id: 2.4
width: 64 bits
capabilities: logical
*-memory
description: System Memory
physical id: 13
slot: System board or motherboard
size: 2GiB
*-bank:0
description: SODIMM [empty]
product: [Empty]
vendor: [Empty]
physical id: 0
serial: [Empty]
slot: DIMM0
*-bank:1
description: SODIMM DDR3 Synchronous 1066 MHz (0.9 ns)
product: SSZ3128M8-EAEEF
vendor: Xicor
physical id: 1
serial: 00000004
slot: DIMM1
size: 2GiB
width: 64 bits
clock: 1066MHz (0.9ns)
*-cpu:1
physical id: 1
bus info: cpu@1
version: 6.6.1
serial: 0003-0661-0000-0000-0000-0000
size: 798MHz
capacity: 798MHz
capabilities: ht cpufreq
configuration: id=2
*-logicalcpu:0
description: Logical CPU
physical id: 2.1
capabilities: logical
*-logicalcpu:1
description: Logical CPU
physical id: 2.2
capabilities: logical
*-logicalcpu:2
description: Logical CPU
physical id: 2.3
capabilities: logical
*-logicalcpu:3
description: Logical CPU
physical id: 2.4
capabilities: logical
所以在这里我看到我的处理器实际上是 64 位的。但是，我想知道我的主板怎么会有“32 位宽度”。我浏览了网络寻找答案，但没有成功。我想这只是一个我不知道的技术事实。
谢谢。
答案1
我知道多年来并没有真正出现过 32/64 位主板，但笔记本电脑可能并非如此。这在某种程度上是有道理的，因为 Atom 长期以来都是 32 位的，而搭载 Atom 处理器的计算机很少配备超过 2 GB 的 RAM，甚至无法升级到 4 GB 以上。也许他们只提供 32 位支持是为了节省成本。
不管怎样，我的台式机主板报告的宽度为 64 位，处理器为 64 位，操作系统为 64 位。