我有一台 Acer (Aspire E1-431) 笔记本电脑。我想增加它的 RAM。理想情况下，我希望有 4Gb，但我不知道如何检查硬件是否支持此扩展。
mchandru@mchandru-Aspire-E1-431:~$ sudo lshw
mchandru-aspire-e1-431
description: Notebook
product: Aspire E1-431 (Type1Sku0)
vendor: Acer
version: V1.26TD3
serial: NXM8VSI0013090643D7620
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 vsyscall32
configuration: chassis=notebook family=Type1Family sku=Type1Sku0 uuid=12A88214-5326-4676-B2C5-089E018CBDB9
*-core
description: Motherboard
product: EA40_HC
vendor: Acer
physical id: 0
version: Type2 - Board Version
serial: NBM8V110013090643D7620
slot: Type2 - Board Chassis Location
*-firmware
description: BIOS
vendor: Insyde Corp.
physical id: 0
version: V1.26TD3
date: 02/21/2013
size: 128KiB
capacity: 4032KiB
capabilities: pci upgrade shadowing cdboot bootselect edd int13floppynec int13floppytoshiba int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int9keyboard int10video acpi usb biosbootspecification uefi
*-cpu
description: CPU
product: Intel(R) Pentium(R) CPU B950 @ 2.10GHz
vendor: Intel Corp.
physical id: 4
bus info: cpu@0
version: Intel(R) Pentium(R) CPU B950 @ 2.10GHz
serial: To Be Filled By O.E.M.
slot: U3E1
size: 1331MHz
capacity: 4GHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 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 syscall nx rdtscp constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave lahf_lm epb xsaveopt dtherm arat pln pts cpufreq
configuration: cores=2 enabledcores=2 threads=2
*-cache:0
description: L1 cache
physical id: 9
slot: L1 Cache
size: 32KiB
capacity: 32KiB
capabilities: internal write-through instruction
configuration: level=1
*-cache:1
description: L2 cache
physical id: a
slot: L2 Cache
size: 256KiB
capacity: 256KiB
capabilities: internal write-through unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: b
slot: L3 Cache
size: 2MiB
capacity: 2MiB
capabilities: internal write-back unified
configuration: level=3
*-cache
description: L1 cache
physical id: 8
slot: L1 Cache
size: 32KiB
capacity: 32KiB
capabilities: internal write-through data
configuration: level=1
*-memory
description: System Memory
physical id: 18
slot: System board or motherboard
size: 2GiB
*-bank:0
description: SODIMM DDR3 Synchronous 1333 MHz (0.8 ns)
product: RMT3010EC58E8F1333
vendor: Unknown
physical id: 0
serial: 40AF5724
slot: DIMM0
size: 2GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:1
description: DIMM [empty]
product: Empty
vendor: Empty
physical id: 1
serial: Empty
slot: DIMM1
*-pci
description: Host bridge
product: 2nd Generation Core Processor Family DRAM Controller
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 09
width: 32 bits
clock: 33MHz
*-display
description: VGA compatible controller
product: 2nd Generation Core Processor Family Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:27 memory:90000000-903fffff memory:80000000-8fffffff ioport:3000(size=64) memory:c0000-dffff
*-communication
description: Communication controller
product: 7 Series/C210 Series Chipset Family MEI Controller #1
vendor: Intel Corporation
physical id: 16
bus info: pci@0000:00:16.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=mei_me latency=0
resources: irq:28 memory:90604000-9060400f
*-usb:0
description: USB controller
product: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2
vendor: Intel Corporation
physical id: 1a
bus info: pci@0000:00:1a.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:16 memory:90609000-906093ff
*-usbhost
product: EHCI Host Controller
vendor: Linux 4.10.0-35-generic ehci_hcd
physical id: 1
bus info: usb@1
logical name: usb1
version: 4.10
capabilities: usb-2.00
configuration: driver=hub slots=2 speed=480Mbit/s
*-usb
description: USB hub
product: Integrated Rate Matching Hub
vendor: Intel Corp.
physical id: 1
bus info: usb@1:1
version: 0.00
capabilities: usb-2.00
configuration: driver=hub slots=6 speed=480Mbit/s
*-multimedia
description: Audio device
product: 7 Series/C210 Series Chipset Family High Definition Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:29 memory:90600000-90603fff
*-pci:0
description: PCI bridge
product: 7 Series/C210 Series Chipset Family PCI Express Root Port 1
vendor: Intel Corporation
physical id: 1c
bus info: pci@0000:00:1c.0
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:17
*-pci:1
description: PCI bridge
product: 7 Series/C210 Series Chipset Family PCI Express Root Port 3
vendor: Intel Corporation
physical id: 1c.2
bus info: pci@0000:00:1c.2
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:18 ioport:2000(size=4096) memory:90500000-905fffff ioport:90400000(size=1048576)
*-generic
description: Unassigned class
product: RTL8411 PCI Express Card Reader
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:04:00.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list
configuration: driver=rtsx_pci latency=0
resources: irq:24 memory:90500000-9050ffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0.2
bus info: pci@0000:04:00.2
logical name: enp4s0f2
version: 0a
serial: 08:9e:01:8c:bd:b9
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8411-1_0.0.3 06/18/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:26 ioport:2000(size=256) memory:90404000-90404fff memory:90400000-90403fff
*-usb:1
description: USB controller
product: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1
vendor: Intel Corporation
physical id: 1d
bus info: pci@0000:00:1d.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:23 memory:90608000-906083ff
*-usbhost
product: EHCI Host Controller
vendor: Linux 4.10.0-35-generic ehci_hcd
physical id: 1
bus info: usb@2
logical name: usb2
version: 4.10
capabilities: usb-2.00
configuration: driver=hub slots=2 speed=480Mbit/s
*-usb
description: USB hub
product: Integrated Rate Matching Hub
vendor: Intel Corp.
physical id: 1
bus info: usb@2:1
version: 0.00
capabilities: usb-2.00
configuration: driver=hub slots=8 speed=480Mbit/s
*-usb
description: Wireless interface
product: Moto E (4) Plus
vendor: MediaTek
physical id: 3
bus info: usb@2:1.3
version: ff.ff
serial: ZH33B28HHX
capabilities: usb-2.00
configuration: driver=rndis_host maxpower=500mA speed=480Mbit/s
*-isa
description: ISA bridge
product: HM77 Express Chipset LPC Controller
vendor: Intel Corporation
physical id: 1f
bus info: pci@0000:00:1f.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: isa bus_master cap_list
configuration: latency=0
*-storage
description: SATA controller
product: 7 Series Chipset Family 6-port SATA Controller [AHCI mode]
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 04
width: 32 bits
clock: 66MHz
capabilities: storage msi pm ahci_1.0 bus_master cap_list
configuration: driver=ahci latency=0
resources: irq:25 ioport:3088(size=8) ioport:3094(size=4) ioport:3080(size=8) ioport:3090(size=4) ioport:3060(size=32) memory:90607000-906077ff
*-serial UNCLAIMED
description: SMBus
product: 7 Series/C210 Series Chipset Family SMBus Controller
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 04
width: 64 bits
clock: 33MHz
configuration: latency=0
resources: memory:90605000-906050ff ioport:3040(size=32)
*-scsi
physical id: 1
logical name: scsi0
capabilities: emulated
*-disk
description: ATA Disk
product: WDC WD3200BPVT-2
vendor: Western Digital
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 1A01
serial: WD-WXG1E82SXD91
size: 298GiB (320GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 logicalsectorsize=512 sectorsize=4096 signature=5764d4c7
*-volume:0
description: Windows NTFS volume
physical id: 1
bus info: scsi@0:0.0.0,1
logical name: /dev/sda1
version: 3.1
serial: fc25-dbc3
size: 498MiB
capacity: 500MiB
capabilities: primary bootable ntfs initialized
configuration: clustersize=4096 created=2017-08-16 01:59:08 filesystem=ntfs label=System Reserved modified_by_chkdsk=true mounted_on_nt4=true resize_log_file=true state=dirty upgrade_on_mount=true
*-volume:1
description: Windows NTFS volume
physical id: 2
bus info: scsi@0:0.0.0,2
logical name: /dev/sda2
version: 3.1
serial: 3495fa12-711d-e441-bc11-d2fa59784434
size: 199GiB
capacity: 199GiB
capabilities: primary ntfs initialized
configuration: clustersize=4096 created=2017-08-16 01:59:23 filesystem=ntfs state=clean
*-volume:2
description: Extended partition
physical id: 3
bus info: scsi@0:0.0.0,3
logical name: /dev/sda3
size: 3905MiB
capacity: 3905MiB
capabilities: primary extended partitioned partitioned:extended
*-logicalvolume
description: Linux swap / Solaris partition
physical id: 5
logical name: /dev/sda5
capacity: 3905MiB
capabilities: nofs
*-volume:3
description: EXT4 volume
vendor: Linux
physical id: 4
bus info: scsi@0:0.0.0,4
logical name: /dev/sda4
logical name: /
logical name: /var/lib/docker/plugins
logical name: /var/lib/docker/aufs
version: 1.0
serial: 8fe75655-ec9a-4970-8af1-b09e771bff31
size: 94GiB
capacity: 94GiB
capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
configuration: created=2017-08-15 18:34:29 filesystem=ext4 lastmountpoint=/ modified=2017-10-01 23:51:44 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,data=ordered mounted=2017-10-01 23:51:50 state=mounted
*-network
description: Ethernet interface
physical id: 1
logical name: enp0s29u1u3
serial: 06:48:f2:8a:33:fa
capabilities: ethernet physical
configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.2 link=yes multicast=yes
mchandru@mchandru-Aspire-E1-431:~$
答案1
检查最大 RAM 容量的另一种方法是使用 dmidecode：
sudo dmidecode -t memory
输出将会像这样：
Handle 0x000A, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 2 GB <---- look for this line
Error Information Handle: Not Provided
Number Of Devices: 2
...甚至更好sudo dmidecode -t memory | grep Max
答案2
一般来说，在终端（按 ctrl-alt-t 启动）中运行以下命令：
sudo dmidecode | more
并查看“物理内存阵列”，它会告诉您系统内存的最大容量和设备数量。
答案3
去Accer 网站您可以通过设备序列号搜索设备，该序列号位于输出的第一部分serial: NXM8VSI0013090643D7620。在下一页上转到产品详情然后再次输入您的序列号，您将看到该笔记本电脑的规格。它显示您的最大内存为 8 GB。