7 Replies Latest reply on Feb 6, 2017 8:22 PM by Intel Corporation

    Intel Server Board S5000PSL / Xeon L5320 -> Speed Stepping (Energy Consumption)



      I'm using a Intel S5000PSL Server Board with two Xeon L5320 CPUs and am having a problem with the power consumption.

      The CPU does not step down to a lower power level.


      Is there a way I can achieve that?


      Here are some Informations from the server:


                     Intel S5000PSL

      BIOS Version: S5000.86B.15.00.0101.110920101604


      OS: Microsoft Windows Server 2008 R2 Standard (x64) Build 7601 (with SP1)



      Processor Manufacturer: Intel(R) Corporation

      Processor Version: Intel(R) Xeon(R) CPU L5320 @ 1.86GHz

      External Clock: 1066 MHz

      Maximum Clock Supported: 1866 MHz

      Current Clock: 1866 MHz

      CPU Socket: Populated

      CPU Status: Enabled

      Processor Type: Central Processor

      Processor Voltage: 1.2 V

      Processor Upgrade: ZIF

      Socket Designation: CPU1

      Processor Name: Intel Xeon L5320

      Original Processor Frequency: 1866.7 MHz

      Original Processor Frequency [MHz]: 1867

      CPU ID: 000006F7

      CPU Brand Name: Intel(R) Xeon(R) CPU L5320 @ 1.86GHz

      CPU Vendor: GenuineIntel

      CPU Stepping: B3

      CPU Code Name: Clovertown LV

      CPU S-Spec: SLA4Q, SLAC9

      CPU Thermal Design Power (TDP): 50 W

      CPU Max. Case Temperature (Tcase_max): 60 °C

      CPU Type: Production Unit

      CPU Platform: LGA771 (FC-LGA6)

      Microcode Update Revision: 6B

      Number of CPU Cores: 4

      Number of Logical CPUs: 4


      Memory Information:

      Memory 8GB

      Memory Speed: 667 MHz


      [General information]

      Total Memory Size: 8 GBytes

      Total Memory Size [MB]: 8192

      [Current Performance Settings]

      Current Memory Clock: 332.4 MHz (5 : 4 ratio)

      Current Timing (tCAS-tRCD-tRP-tRAS): 5.0-5-5-15

      Read to Read Delay (tRD_RD) Same Rank: 3T

      Write to Write Delay (tWR_WR) Same Rank: 2T

      Read to Write Delay (tRD_WR) Same Rank: 4T

      Write to Read Delay (tWR_RD) Same Rank (tWTR): 8T

      Write to Read Delay (tWR_RD) Different Rank: 2T

      Read to Precharge Delay (tRTP): 3T

      Write to Precharge Delay (tWTP): 16T

      Write Recovery Time (tWR): 5T

      RAS# to RAS# Delay (tRRD): 3T

      Row Cycle Time (tRC): 20T

      Refresh Cycle Time (tRFC): 28T



      Raid-1: 2 Drives

      Raid-6: 6 Drives (external controller)



      Energy Settings in the OS are as followed:



      Intel Processor Diagnostic Tool:

      Intel Processor Diagnostic Tool.jpg


      CPU-Z reading max Multiplier:



      In the bios speed stepping was activated, and I do not know what to do, to conserve some energy.

      I hope you can help me to either find a setting, so I can put it into a more energy preserving mode when the power is not used.

      Or if not have a recommendation on what to switch to, if it is not possible for some reasons.


      Thank you very much in advance!