Lenovo ThinkStation P720 Manual Download Page 3

 
 

 

 

Overview 

The purpose of this document is to provide guidance for users on how to optimally 
configure the system memory in the ThinkStation P920 and P720 platforms in 
order to provide the best performance.   

 

 

 

Section 1 

– Platform Memory Architecture 

The launch of the Intel® Purely platform has brought with it some exciting 
changes to the system architecture for memory as compared to previous 
workstation platforms.  Newly added features such as support for 6 channels of 
memory (per CPU) and a higher top supported memory bus speed combine to 
provide users with significantly improved memory performance in their 
workstations.  Both the ThinkStation P920 and ThinkStation P720 have been 
designed to take advantage of these new architecture enhancements to the 
memory subsystem.   

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for ThinkStation P720

Page 1: ...LENOVO THINKSTATION P920 AND P720 MEMORY CONFIGURATOR ...

Page 2: ...Contents OVERVIEW SECTION 1 PLATFORM MEMORY ARCHITECTURE SECTION 2 P920 MEMORY CONFIGURATIONS SECTION 3 P720 MEMORY CONFIGURATIONS SECTION 4 DOCUMENT REVISION HISTORY ...

Page 3: ... has brought with it some exciting changes to the system architecture for memory as compared to previous workstation platforms Newly added features such as support for 6 channels of memory per CPU and a higher top supported memory bus speed combine to provide users with significantly improved memory performance in their workstations Both the ThinkStation P920 and ThinkStation P720 have been design...

Page 4: ...ull advantage of all 6 channels of memory support offered by the new Intel Xeon E5 Skylake CPUs Figure 1 below shows a visual reference of the DIMM slot layout for the P920 platform Figure 1 P920 Motherboard DIMM Layout 1 Actual memory bus speed is determined by the CPU s selected CPU 2 CPU 1 CPU1 DIMM 2 CPU1 DIMM 6 CPU1 DIMM 4 CPU1 DIMM 8 CPU1 DIMM 7 CPU1 DIMM 3 CPU1 DIMM 5 CPU1 DIMM 1 CPU2 DIMM ...

Page 5: ...acity While the system will function with unbalanced DIMMs overall memory performance could be affected For best memory bandwidth performance Lenovo recommends optimizing the overall memory configuration to use 6 DIMMs per CPU DIMMS A1 and D1 for each CPU can be used where overall memory capacity is prioritized over memory bandwidth Once DIMM quantity and DIMM capacity have been balanced across CP...

Page 6: ... DIMM 6 DIMM 7 DIMM 8 Note Memory configurations using 5 DIMMs or 7 DIMMs per CPU are not recommended as they are unbalanced configurations that could result in memory performance degradation 2 5 DIMM per CPU and 7 DIMM per CPU configurations will function but should be avoided as they present an unbalanced load to the CPU that could result in memory bandwidth degradation 3 8 DIMM per CPU configur...

Page 7: ... all 6 memory channels offered by the new Intel Xeon E5 Skylake CPUs in a single DIMM per channel configuration and also support the highest memory bus speed of 2666MHz4 Figure 3 shows a visual representation of the DIMM slot layout for the P720 platform Figure 3 P720 Motherboard DIMM Slot Layout 4 Actual memory bus speed is determined by the CPU s selected CPU 1 CPU 2 CPU2 DIMM 3 CPU2 DIMM 5 CPU2...

Page 8: ...s CPUs if necessary users should follow the recommended fill order for each CPU found in Figure 4 Largest capacity DIMMs should be installed first if using mixed DIMM capacities Figure 4 shows the recommended DIMM slot fill order for each CPU installed in the system Figure 4 P720 DIMM Slot Fill Order Recommendations of DIMMs per CPU DIMM slots used for each CPU 1 DIMM DIMM 3 2 DIMMs DIMM 3 DIMM 5 ...

Page 9: ...Section 4 Document Revision History Version Date Author Changes Updates 1 0 11 8 2017 Cory Chapman Initial launch release ...

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