这是我的 RAM， 和这是我的主板。Ram 的额定速度为 1600 MHz，主板支持该速度。
然而，据报道sudo dmidecode --type 17，这些芯片的运行速度仅为 1333 MHz：
$ sudo dmidecode --type 17
# dmidecode 2.12
SMBIOS 2.4 present.
Handle 0x002A, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0029
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: A0
Bank Locator: Bank0/1
Type: Unknown
Type Detail: None
Speed: 1333 MHz
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x002B, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0029
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: A1
Bank Locator: Bank2/3
Type: Unknown
Type Detail: None
Speed: 1333 MHz
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x002C, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0029
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: A2
Bank Locator: Bank4/5
Type: Unknown
Type Detail: None
Speed: 1333 MHz
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x002D, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0029
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: A3
Bank Locator: Bank6/7
Type: Unknown
Type Detail: None
Speed: 1333 MHz
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
这是我的 BIOS 问题还是操作系统问题？无论哪种情况，我该如何让 RAM 全速运行？