server-info should show both ram speed and configured speed. It's different things.

[strizhechenko]

Handle 0x1117, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x1001
	Error Information Handle: Not Provided
	Total Width: 72 bits
	Data Width: 64 bits
	Size: 4096 MB
	Form Factor: DIMM
	Set: 23
	Locator: PROC  2 DIMM 12 
	Bank Locator: Not Specified
	Type: DDR3
	Type Detail: Synchronous Registered (Buffered)
	Speed: 1333 MHz
	Manufacturer: HP     
	Serial Number: Not Specified
	Asset Tag: Not Specified
	Part Number: 647647-071          
	Rank: 1
	Configured Clock Speed: 1067 MHz
	Minimum Voltage:  1.35 V
	Maximum Voltage:  1.5 V
	Configured Voltage:  1.35 V