Why is my 1600 Mhz Ram working at 1333 Mhz

[avg123]

HWiNFO64 Version 7.42-5030

DESKTOP -----------------------------------------------------------

 [Current Computer]
 [Operating System]

Memory --------------------------------------------------------------------

 [General Information]
  Total Memory Size:                      16 GBytes
  Total Memory Size [MB]:                 16384
 [Current Performance Settings]
  Maximum Supported Memory Clock:         666.7 MHz
  Current Memory Clock:                   665.2 MHz
  Current Timing (tCAS-tRCD-tRP-tRAS):    9-9-9-24
  Memory Channels Supported:              2
  Memory Channels Active:                 2
  Command Rate (CR):                      1T
  Read to Read Delay (tRDRD_DG/TrdrdScDlr) Different Bank Group: 1T
  Read to Read Delay (tRDRD_DD) Different DIMM: 3T
  Write to Write Delay (tWRWR_DG/TwrwrScDlr) Different Bank Group: 3T
  Write to Write Delay (tWRWR_DD) Different DIMM: 3T
  Read to Write Delay (tRDWR_SG/TrdwrScL) Same Bank Group: 3T
  Read to Write Delay (tRDWR_DG/TrdwrScDlr) Different Bank Group: 3T
  Read to Write Delay (tRDWR_DD) Different DIMM: 3T
  Write to Read Delay (tWRRD_SG/TwrrdScL) Same Bank Group: 5T
  Write to Read Delay (tWRRD_DG/TwrrdScDlr) Different Bank Group: 1T
  Write to Read Delay (tWRRD_DD) Different DIMM: 1T
  Read to Precharge Delay (tRTP):         5T
  Write to Precharge Delay (tWTP):        21T
  Write Recovery Time (tWR):              10T
  RAS# to RAS# Delay (tRRD):              4T
  Refresh Cycle Time (tRFC):              174T
  Four Activate Window (tFAW):            20T

Row: 0 [BANK 0/DIMM0] - 8 GB PC3-12800 DDR3 SDRAM SK Hynix HMT41GS6BFR8A-PB

 [General Module Information]
  Module Number:                          0
  Module Size:                            8 GBytes
  Memory Type:                            DDR3 SDRAM
  Module Type:                            SO-DIMM
  Memory Speed:                           800.0 MHz (DDR3-1600 / PC3-12800)
  Module Manufacturer:                    SK Hynix
  Module Part Number:                     HMT41GS6BFR8A-PB
  Module Revision:                        12366
  Module Serial Number:                   1291290884 (0489F74C)
  Module Manufacturing Date:              Year: 2015, Week: 28
  Module Manufacturing Location:          1
  SDRAM Manufacturer:                     SK Hynix
  Error Check/Correction:                 None
 [Module Characteristics]
  Row Address Bits:                       16
  Column Address Bits:                    10
  Number Of Banks:                        8
  Module Density:                         4096 Mb
  Number Of Ranks:                        2
  Device Width:                           8 bits
  Bus Width:                              64 bits
  Module Nominal Voltage (VDD):           1.5 V, 1.35 V
 [Module timing]
  Minimum SDRAM Cycle Time (tCKmin):      1.250 ns
  CAS# Latencies Supported:               5, 6, 7, 8, 9, 10, 11
  Minimum CAS# Latency Time (tAAmin):     13.125 ns
  Minimum RAS# to CAS# Delay (tRCDmin):   13.125 ns
  Minimum Row Precharge Time (tRPmin):    13.125 ns
  Minimum Active to Precharge Time (tRASmin): 35.000 ns
  Supported Module Timing at 800.0 MHz:   11-11-11-28
  Supported Module Timing at 666.7 MHz:   9-9-9-24
  Supported Module Timing at 533.3 MHz:   7-7-7-19
  Supported Module Timing at 400.0 MHz:   6-6-6-14
  Supported Module Timing at 333.3 MHz:   5-5-5-12
  Minimum Write Recovery Time (tWRmin):   15.000 ns
  Minimum Row Active to Row Active Delay (tRRDmin): 6.000 ns
  Minimum Active to Active/Refresh Time (tRCmin): 48.125 ns
  Minimum Refresh Recovery Time Delay (tRFCmin): 260.000 ns
  Minimum Internal Write to Read Command Delay (tWTRmin): 7.500 ns
  Minimum Internal Read to Precharge Command Delay (tRTPmin): 7.500 ns
  Minimum Four Activate Window Delay Time (tFAWmin): 30.000 ns
 [Features]
  Partial Array Self Refresh (PASR):      Not Supported
  On-die Thermal Sensor (ODTS) Readout:   Not Supported
  Auto Self Refresh (ASR):                Not Supported
  Extended Temperature 1X Refresh Rate:   Not Supported
  Extended Temperature Range:             Supported
  Module Temperature Sensor:              Not Supported
  Pseudo Target Row Refresh (pTRR):       Supported
  Maximum Active Window (MAW):            64 mS
  Unlimited MAC:                          Supported
  Maximum Active Window (MAW):            Unknown (not tested)
  Module Nominal Height:                  29 - 30 mm
  Module Maximum Thickness (Front):       1 - 2 mm
  Module Maximum Thickness (Back):        1 - 2 mm

Row: 2 [BANK 0/DIMM0] - 8 GB PC3-12800 DDR3 SDRAM SK Hynix HMT41GS6BFR8A-PB

 [General Module Information]
  Module Number:                          2
  Module Size:                            8 GBytes
  Memory Type:                            DDR3 SDRAM
  Module Type:                            SO-DIMM
  Memory Speed:                           800.0 MHz (DDR3-1600 / PC3-12800)
  Module Manufacturer:                    SK Hynix
  Module Part Number:                     HMT41GS6BFR8A-PB
  Module Revision:                        12366
  Module Serial Number:                   1291290884 (0489F74C)
  Module Manufacturing Date:              Year: 2015, Week: 28
  Module Manufacturing Location:          1
  SDRAM Manufacturer:                     SK Hynix
  Error Check/Correction:                 None
 [Module Characteristics]
  Row Address Bits:                       16
  Column Address Bits:                    10
  Number Of Banks:                        8
  Module Density:                         4096 Mb
  Number Of Ranks:                        2
  Device Width:                           8 bits
  Bus Width:                              64 bits
  Module Nominal Voltage (VDD):           1.5 V, 1.35 V
 [Module timing]
  Minimum SDRAM Cycle Time (tCKmin):      1.250 ns
  CAS# Latencies Supported:               5, 6, 7, 8, 9, 10, 11
  Minimum CAS# Latency Time (tAAmin):     13.125 ns
  Minimum RAS# to CAS# Delay (tRCDmin):   13.125 ns
  Minimum Row Precharge Time (tRPmin):    13.125 ns
  Minimum Active to Precharge Time (tRASmin): 35.000 ns
  Supported Module Timing at 800.0 MHz:   11-11-11-28
  Supported Module Timing at 666.7 MHz:   9-9-9-24
  Supported Module Timing at 533.3 MHz:   7-7-7-19
  Supported Module Timing at 400.0 MHz:   6-6-6-14
  Supported Module Timing at 333.3 MHz:   5-5-5-12
  Minimum Write Recovery Time (tWRmin):   15.000 ns
  Minimum Row Active to Row Active Delay (tRRDmin): 6.000 ns
  Minimum Active to Active/Refresh Time (tRCmin): 48.125 ns
  Minimum Refresh Recovery Time Delay (tRFCmin): 260.000 ns
  Minimum Internal Write to Read Command Delay (tWTRmin): 7.500 ns
  Minimum Internal Read to Precharge Command Delay (tRTPmin): 7.500 ns
  Minimum Four Activate Window Delay Time (tFAWmin): 30.000 ns
 [Features]
  Partial Array Self Refresh (PASR):      Not Supported
  On-die Thermal Sensor (ODTS) Readout:   Not Supported
  Auto Self Refresh (ASR):                Not Supported
  Extended Temperature 1X Refresh Rate:   Not Supported
  Extended Temperature Range:             Supported
  Module Temperature Sensor:              Not Supported
  Pseudo Target Row Refresh (pTRR):       Supported
  Maximum Active Window (MAW):            64 mS
  Unlimited MAC:                          Supported
  Maximum Active Window (MAW):            Unknown (not tested)
  Module Nominal Height:                  29 - 30 mm
  Module Maximum Thickness (Front):       1 - 2 mm
  Module Maximum Thickness (Back):        1 - 2 mm

My Laptop does support 1600 Mhz and the previous 2 modules were running at 1600 mhz at 1.5v

These ones are running at 1333Mhz  at 1.35v

 

[Alex Atkin UK]

9 minutes ago, avg123 said:

HWiNFO64 Version 7.42-5030

DESKTOP -----------------------------------------------------------

 [Current Computer]
 [Operating System]

Memory --------------------------------------------------------------------

 [General Information]
  Total Memory Size:                      16 GBytes
  Total Memory Size [MB]:                 16384
 [Current Performance Settings]
  Maximum Supported Memory Clock:         666.7 MHz
  Current Memory Clock:                   665.2 MHz
  Current Timing (tCAS-tRCD-tRP-tRAS):    9-9-9-24
  Memory Channels Supported:              2
  Memory Channels Active:                 2
  Command Rate (CR):                      1T
  Read to Read Delay (tRDRD_DG/TrdrdScDlr) Different Bank Group: 1T
  Read to Read Delay (tRDRD_DD) Different DIMM: 3T
  Write to Write Delay (tWRWR_DG/TwrwrScDlr) Different Bank Group: 3T
  Write to Write Delay (tWRWR_DD) Different DIMM: 3T
  Read to Write Delay (tRDWR_SG/TrdwrScL) Same Bank Group: 3T
  Read to Write Delay (tRDWR_DG/TrdwrScDlr) Different Bank Group: 3T
  Read to Write Delay (tRDWR_DD) Different DIMM: 3T
  Write to Read Delay (tWRRD_SG/TwrrdScL) Same Bank Group: 5T
  Write to Read Delay (tWRRD_DG/TwrrdScDlr) Different Bank Group: 1T
  Write to Read Delay (tWRRD_DD) Different DIMM: 1T
  Read to Precharge Delay (tRTP):         5T
  Write to Precharge Delay (tWTP):        21T
  Write Recovery Time (tWR):              10T
  RAS# to RAS# Delay (tRRD):              4T
  Refresh Cycle Time (tRFC):              174T
  Four Activate Window (tFAW):            20T

Row: 0 [BANK 0/DIMM0] - 8 GB PC3-12800 DDR3 SDRAM SK Hynix HMT41GS6BFR8A-PB

 [General Module Information]
  Module Number:                          0
  Module Size:                            8 GBytes
  Memory Type:                            DDR3 SDRAM
  Module Type:                            SO-DIMM
  Memory Speed:                           800.0 MHz (DDR3-1600 / PC3-12800)
  Module Manufacturer:                    SK Hynix
  Module Part Number:                     HMT41GS6BFR8A-PB
  Module Revision:                        12366
  Module Serial Number:                   1291290884 (0489F74C)
  Module Manufacturing Date:              Year: 2015, Week: 28
  Module Manufacturing Location:          1
  SDRAM Manufacturer:                     SK Hynix
  Error Check/Correction:                 None
 [Module Characteristics]
  Row Address Bits:                       16
  Column Address Bits:                    10
  Number Of Banks:                        8
  Module Density:                         4096 Mb
  Number Of Ranks:                        2
  Device Width:                           8 bits
  Bus Width:                              64 bits
  Module Nominal Voltage (VDD):           1.5 V, 1.35 V
 [Module timing]
  Minimum SDRAM Cycle Time (tCKmin):      1.250 ns
  CAS# Latencies Supported:               5, 6, 7, 8, 9, 10, 11
  Minimum CAS# Latency Time (tAAmin):     13.125 ns
  Minimum RAS# to CAS# Delay (tRCDmin):   13.125 ns
  Minimum Row Precharge Time (tRPmin):    13.125 ns
  Minimum Active to Precharge Time (tRASmin): 35.000 ns
  Supported Module Timing at 800.0 MHz:   11-11-11-28
  Supported Module Timing at 666.7 MHz:   9-9-9-24
  Supported Module Timing at 533.3 MHz:   7-7-7-19
  Supported Module Timing at 400.0 MHz:   6-6-6-14
  Supported Module Timing at 333.3 MHz:   5-5-5-12
  Minimum Write Recovery Time (tWRmin):   15.000 ns
  Minimum Row Active to Row Active Delay (tRRDmin): 6.000 ns
  Minimum Active to Active/Refresh Time (tRCmin): 48.125 ns
  Minimum Refresh Recovery Time Delay (tRFCmin): 260.000 ns
  Minimum Internal Write to Read Command Delay (tWTRmin): 7.500 ns
  Minimum Internal Read to Precharge Command Delay (tRTPmin): 7.500 ns
  Minimum Four Activate Window Delay Time (tFAWmin): 30.000 ns
 [Features]
  Partial Array Self Refresh (PASR):      Not Supported
  On-die Thermal Sensor (ODTS) Readout:   Not Supported
  Auto Self Refresh (ASR):                Not Supported
  Extended Temperature 1X Refresh Rate:   Not Supported
  Extended Temperature Range:             Supported
  Module Temperature Sensor:              Not Supported
  Pseudo Target Row Refresh (pTRR):       Supported
  Maximum Active Window (MAW):            64 mS
  Unlimited MAC:                          Supported
  Maximum Active Window (MAW):            Unknown (not tested)
  Module Nominal Height:                  29 - 30 mm
  Module Maximum Thickness (Front):       1 - 2 mm
  Module Maximum Thickness (Back):        1 - 2 mm

Row: 2 [BANK 0/DIMM0] - 8 GB PC3-12800 DDR3 SDRAM SK Hynix HMT41GS6BFR8A-PB

 [General Module Information]
  Module Number:                          2
  Module Size:                            8 GBytes
  Memory Type:                            DDR3 SDRAM
  Module Type:                            SO-DIMM
  Memory Speed:                           800.0 MHz (DDR3-1600 / PC3-12800)
  Module Manufacturer:                    SK Hynix
  Module Part Number:                     HMT41GS6BFR8A-PB
  Module Revision:                        12366
  Module Serial Number:                   1291290884 (0489F74C)
  Module Manufacturing Date:              Year: 2015, Week: 28
  Module Manufacturing Location:          1
  SDRAM Manufacturer:                     SK Hynix
  Error Check/Correction:                 None
 [Module Characteristics]
  Row Address Bits:                       16
  Column Address Bits:                    10
  Number Of Banks:                        8
  Module Density:                         4096 Mb
  Number Of Ranks:                        2
  Device Width:                           8 bits
  Bus Width:                              64 bits
  Module Nominal Voltage (VDD):           1.5 V, 1.35 V
 [Module timing]
  Minimum SDRAM Cycle Time (tCKmin):      1.250 ns
  CAS# Latencies Supported:               5, 6, 7, 8, 9, 10, 11
  Minimum CAS# Latency Time (tAAmin):     13.125 ns
  Minimum RAS# to CAS# Delay (tRCDmin):   13.125 ns
  Minimum Row Precharge Time (tRPmin):    13.125 ns
  Minimum Active to Precharge Time (tRASmin): 35.000 ns
  Supported Module Timing at 800.0 MHz:   11-11-11-28
  Supported Module Timing at 666.7 MHz:   9-9-9-24
  Supported Module Timing at 533.3 MHz:   7-7-7-19
  Supported Module Timing at 400.0 MHz:   6-6-6-14
  Supported Module Timing at 333.3 MHz:   5-5-5-12
  Minimum Write Recovery Time (tWRmin):   15.000 ns
  Minimum Row Active to Row Active Delay (tRRDmin): 6.000 ns
  Minimum Active to Active/Refresh Time (tRCmin): 48.125 ns
  Minimum Refresh Recovery Time Delay (tRFCmin): 260.000 ns
  Minimum Internal Write to Read Command Delay (tWTRmin): 7.500 ns
  Minimum Internal Read to Precharge Command Delay (tRTPmin): 7.500 ns
  Minimum Four Activate Window Delay Time (tFAWmin): 30.000 ns
 [Features]
  Partial Array Self Refresh (PASR):      Not Supported
  On-die Thermal Sensor (ODTS) Readout:   Not Supported
  Auto Self Refresh (ASR):                Not Supported
  Extended Temperature 1X Refresh Rate:   Not Supported
  Extended Temperature Range:             Supported
  Module Temperature Sensor:              Not Supported
  Pseudo Target Row Refresh (pTRR):       Supported
  Maximum Active Window (MAW):            64 mS
  Unlimited MAC:                          Supported
  Maximum Active Window (MAW):            Unknown (not tested)
  Module Nominal Height:                  29 - 30 mm
  Module Maximum Thickness (Front):       1 - 2 mm
  Module Maximum Thickness (Back):        1 - 2 mm

My Laptop does support 1600 Mhz and the previous 2 modules were running at 1600 mhz at 1.5v

These ones are running at 1333Mhz  at 1.35v

 

Unfortunately all bets are off with laptop RAM, it depends on what the BIOS decides with no user control over it (at least not on any I've seen).

 

My guess is your old RAM didn't have a 1.35v profile and the BIOS is picking the fastest it can do at the lowest voltage.

[avg123]

15 minutes ago, Alex Atkin UK said:

Unfortunately all bets are off with laptop RAM, it depends on what the BIOS decides with no user control over it (at least not on any I've seen).

 

My guess is your old RAM didn't have a 1.35v profile and the BIOS is picking the fastest it can do at the lowest voltage.

Yes the old RAM modules did not support DDR3L standard. They were just 1.5V.

 

Is it a fault of the RAM sticks? Do I need to replace it? Would buying RAM with different CAS get me 1600Mhz?

 

I bought the cheapest RAM I could find and they are all Hynix DDR3L.  I thought of upgrading to SSD instead of spending too much on RAM.

 

Would 1600Mhz make a big difference over 1333 MHz? Is it worth spending more money?

[Alex Atkin UK]

2 minutes ago, avg123 said:

Yes the old RAM modules did not support DDR3L standard. They were just 1.5V.

 

Is it a fault of the RAM sticks? Do I need to replace it? Would buying RAM with different CAS get me 1600Mhz?

 

I bought the cheapest RAM I could find and they are all Hynix DDR3L.  I thought of upgrading to SSD instead of spending too much on RAM.

 

Would 1600Mhz make a big difference over 1333 MHz? Is it worth spending more money?

My guess is its the BIOS seeing DDR3L and using that profile, rather than the faster one.

 

The plus is it might slightly increase battery life, if it impacts your usage of the laptop really depends what you're using it for.  If its just general purpose, web browsing, etc, then I doubt you'd notice the difference.

 

You were right in that having more RAM is the first step to make an older laptop more usable, with an SSD the next one.  Unless you're really pushing the graphics in some way, I think you made the right choice even if the RAM runs slower.  I don't think anything is faulty, its just how the laptop BIOS was designed to work, though you could try to see if its the latest BIOS in case this was a known bug, but I wouldn't be shocked if its entirely as intended.