2 Replies Latest reply on Aug 26, 2015 3:16 PM by allan_intel

    Lenovo laptop with Intel CPU remains at lowest clock

    Jasper821

      I have an Lenovo T440p with an Intel Core i5 4300M CPU. 8GB RAM, SSD running with Windows 7 (preinstalled).

      The only thing I did not like about this laptop was the screen, which I replaced (the whole LCD unit - including the hinges) with a full-hd version. It was rather easy; I did not have to remove the CPU/GPU.

      Recently I noticed is that the laptop has become really slow, especially running VMs. In task manager I can see that the CPU is many times at 100% on all cores. CPU-Z is reporting that the CPU is running at the lowest possible clock:

      • Core Speed: 798.85 MHz
      • Multiplier x8
      • Bus Speed 99.87 MHz
      • Core Voltage of 0.659 V

      (full details at the end)

      I have set Windows already to "Maximum Performance" in the energy settings. I have also taken out the battery and am running with the power adapter. I also set the Lenovo Power Manager to maximum performance. Sadly, no improvement.

      What else can I try?

      CPU-Z TXT Report
      -------------------------------------------------------------------------
      
      Binaries
      -------------------------------------------------------------------------
      
      CPU-Z version               1.72.1.x64
      
      Processors
      -------------------------------------------------------------------------
      
      Number of processors          1
      Number of threads          4
      
      APICs
      -------------------------------------------------------------------------
      
      Processor 0     
           -- Core 0     
                -- Thread 0     0
                -- Thread 1     1
           -- Core 1     
                -- Thread 0     2
                -- Thread 1     3
      
      Timers
      -------------------------------------------------------------------------
      
           ACPI timer          3.580 MHz
           HPET timer          14.318 MHz
           Perf timer          2.533 MHz
           Sys timer          1.000 KHz
      
      
      Processors Information
      -------------------------------------------------------------------------
      
      Processor 1               ID = 0
           Number of cores          2 (max 8)
           Number of threads     4 (max 16)
           Name               Intel Core i5 4300M
           Codename          Haswell
           Specification          Intel(R) Core(TM) i5-4300M CPU @ 2.60GHz
           Package (platform ID)     Socket 947 rPGA (0x4)
           CPUID               6.C.3
           Extended CPUID          6.3C
           Core Stepping          C0
           Technology          22 nm
           TDP Limit          37.0 Watts
           Tjmax               100.0 °C
           Core Speed          799.0 MHz
           Multiplier x Bus Speed     8.0 x 99.9 MHz
           Stock frequency          2600 MHz
           Instructions sets     MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x, AES, AVX, AVX2, FMA3, TSX
           L1 Data cache          2 x 32 KBytes, 8-way set associative, 64-byte line size
           L1 Instruction cache     2 x 32 KBytes, 8-way set associative, 64-byte line size
           L2 cache          2 x 256 KBytes, 8-way set associative, 64-byte line size
           L3 cache          3 MBytes, 12-way set associative, 64-byte line size
           FID/VID Control          yes
      
      
           Turbo Mode          supported, enabled
           Max non-turbo ratio     26x
           Max turbo ratio          33x
           Max efficiency ratio     8x
           O/C bins          none
           Ratio 1 core          33x
           Ratio 2 cores          32x
           Ratio 3 cores          32x
           Ratio 4 cores          32x
           TSC               2596.8 MHz
           APERF               794.7 MHz
           MPERF               2581.1 MHz
           IA Voltage Mode          PCU adaptive
           IA Voltage Offset     0 mV
           GT Voltage Mode          PCU adaptive
           GT Voltage Offset     0 mV
           LLC/Ring Voltage Mode     PCU adaptive
           LLC/Ring Voltage Offset     0 mV
           Agent Voltage Mode     PCU adaptive
           Agent Voltage Offset     0 mV
      
           Temperature 0          55°C (131°F) [0x2D] (Core #0)
           Temperature 1          59°C (138°F) [0x29] (Package)
           Power 0               11.12 W (Package)
           Power 1               1.54 W (IA Cores)
           Power 2               0.24 W (GT)
           Power 3               9.34 W (Uncore)
           Power 4               0.88 W (DRAM)
           Voltage 0          0.66 Volts (VID)
           Voltage 1          +0.00 Volts (IA Offset)
           Voltage 2          +0.00 Volts (GT Offset)
           Voltage 3          +0.00 Volts (LLC/Ring Offset)
           Voltage 4          +0.00 Volts (System Agent Offset)