Install lshw
yum install lshw
lshw -class memory
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[root@hydra ~]# lshw -class memory
*-firmware
description: BIOS
vendor: American Megatrends Inc.
physical id: 0
version: 3.5c
date: 03/18/2016
size: 64KiB
capacity: 2MiB
capabilities: isa pci pnp upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification
*-cache:0
description: L1 cache
physical id: 5
slot: L1-Cache
size: 768KiB
capacity: 768KiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: 6
slot: L2-Cache
size: 16MiB
capacity: 16MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: 7
slot: L3-Cache
size: 12MiB
capacity: 12MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=3
*-cache:0
description: L1 cache
physical id: 9
slot: L1-Cache
size: 768KiB
capacity: 768KiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: a
slot: L2-Cache
size: 16MiB
capacity: 16MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: b
slot: L3-Cache
size: 12MiB
capacity: 12MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=3
*-memory
description: System Memory
physical id: 11
slot: System board or motherboard
size: 64GiB
capabilities: ecc
configuration: errordetection=multi-bit-ecc
*-bank:0
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: M393B5270CH0-CH9
vendor: Samsung
physical id: 0
serial: 483EB2EB
slot: P1_DIMM1B
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:1
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: M393B5270CH0-CH9
vendor: Samsung
physical id: 1
serial: 483EB2F1
slot: P1_DIMM1A
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:2
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: HMT151R7BFR4C-H9
vendor: Hynix
physical id: 2
serial: 2324A9EB
slot: P1_DIMM2B
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:3
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: HMT151R7BFR4C-H9
vendor: Hynix
physical id: 3
serial: 0D64816E
slot: P1_DIMM2A
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:4
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: 9965447-034.A00LF
vendor: Kingston
physical id: 4
serial: D31CED11
slot: P1_DIMM3B
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:5
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: 9965447-034.A00LF
vendor: Kingston
physical id: 5
serial: D51CEA78
slot: P1_DIMM3A
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:6
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: 9965447-034.A00LF
vendor: Kingston
physical id: 6
serial: E51C1B1F
slot: P1_DIMM4B
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:7
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: 9965447-034.A00LF
vendor: Kingston
physical id: 7
serial: E31C7D1E
slot: P1_DIMM4A
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:8
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: M393B5270CH0-CH9
vendor: Samsung
physical id: 8
serial: 483EA5A8
slot: P2_DIMM1B
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:9
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: M393B5270CH0-CH9
vendor: Samsung
physical id: 9
serial: 483EB2EF
slot: P2_DIMM1A
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:10
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: HMT151R7BFR4C-H9
vendor: Hynix
physical id: a
serial: 0DB48166
slot: P2_DIMM2B
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:11
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: HMT151R7BFR4C-H9
vendor: Hynix
physical id: b
serial: 32719C38
slot: P2_DIMM2A
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:12
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: 9965447-034.A00LF
vendor: Kingston
physical id: c
serial: D51CFF11
slot: P2_DIMM3B
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:13
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: 9965447-034.A00LF
vendor: Kingston
physical id: d
serial: D31CD678
slot: P2_DIMM3A
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:14
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: 9965447-034.A00LF
vendor: Kingston
physical id: e
serial: E31C281E
slot: P2_DIMM4B
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:15
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: 9965447-034.A00LF
vendor: Kingston
physical id: f
serial: D51C0012
slot: P2_DIMM4A
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)