在linux系统中，查看内存型号信息，可以使用命令dmidecode。
例如：
# dmidecode -t memory
# dmidecode 2.9
SMBIOS 2.4 present.
Handle 0x1000, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: Multi-bit ECC
Maximum Capacity: 32 GB 《最大支持的内存数》
Error Information Handle: Not Provided
Number Of Devices: 8 《插槽数》
Handle 0x1100, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 1024 MB 《已有的1G》
Form Factor: FB-DIMM
Set: 1
Locator: DIMM1
Bank Locator: Not Specified
Type: DDR2 FB-DIMM 《型号》
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns) 《频率》
Manufacturer: 855185518551
Serial Number: 02036124
Asset Tag: 450728
Part Number: 72T128420HFA3SB
Handle 0x1101, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 1024 MB 《已有的1G》
Form Factor: FB-DIMM
Set: 1
Locator: DIMM2
Bank Locator: Not Specified
Type: DDR2 FB-DIMM 《型号》
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns) 《频率》
Manufacturer: 80AD808980AD
Serial Number: 47714406
Asset Tag: 010736
Part Number: HYMP512F72CP8N3-Y5
Handle 0x1102, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 1024 MB 《已有的1G》
Form Factor: FB-DIMM
Set: 2
Locator: DIMM3
Bank Locator: Not Specified
Type: DDR2 FB-DIMM 《型号》
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns) 《频率》
Manufacturer: 855185518551
Serial Number: 02034615
Asset Tag: 450728
Part Number: 72T128420HFA3SB
Handle 0x1103, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 1024 MB 《已有的1G》
Form Factor: FB-DIMM
Set: 2
Locator: DIMM4
Bank Locator: Not Specified
Type: DDR2 FB-DIMM 《型号》
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns) 《频率》
Manufacturer: 855185518551
Serial Number: 02035C12
Asset Tag: 450728
Part Number: 72T128420HFA3SB
Handle 0x1104, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: FB-DIMM
Set: 3
Locator: DIMM5
Bank Locator: Not Specified
Type: DDR2 FB-DIMM
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x1105, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: FB-DIMM
Set: 3
Locator: DIMM6
Bank Locator: Not Specified
Type: DDR2 FB-DIMM
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x1106, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: FB-DIMM
Set: 4
Locator: DIMM7
Bank Locator: Not Specified
Type: DDR2 FB-DIMM
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x1107, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: FB-DIMM
Set: 4
Locator: DIMM8
Bank Locator: Not Specified
Type: DDR2 FB-DIMM
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
从以上输出信息，我们得知：这台服务器是4个单根1G的内存，最大支持32G，8个插槽，单根支持4G。
附，查看内存条数、内存最大容量、内存频率的命令。
1，内存条数：
2，内存最大容量：
3，内存频率：