Question P5P43TD PRO 1600Mhz RAM Issue

Avexolog · Oct 8, 2019

Hi Folks,

I have a problem with my motherboard P5P43TD PRO, I know is quite old motherboard anyway, I used 4GB Patriot Memory 2x2Gb on frequency 1600Mhz manualy overclocked Multiplier x Bus Speed 7.5 x 400 MHz Core Speed 3000.0 MHz and works just fine without any issues,

Yesterday I bought the second pair of RAM Corsair Dominator 2x2Gb frequency 1600Mhz , with these two extra RAM system doesnt boot, so I restarted PC, then some safe frequency of ram 1066Mhz and overclocking failed message appear please pres F1 to configure, then I quit a BIOS without any changes continue to windows. Then I restarted the PC from the windows and bingo, now the RAMs on frequency works on 1600Mhz and processor on 3.0Ghz without any issues,

the problem is only when I turned off the PC, then doesnt work, but if I can run the windows, and restar PC its works again without any issues, I relly dont know why thats happening, and why its not working from the begginning

PS: if the RAMs are on frequency 1333mhz it working even if I turned off the PC.

Do you have any idea how to solve this intricate puzzler to keep RAMs on 1600Mhz without any restarting from Windows. Here are some informations from CPUZ

Name Intel Core 2 Quad Q8300
Specification Intel(R) Core(TM)2 Quad CPU Q8300 @ 2.50GHz
Core Speed 2500.0 MHz
Multiplier x Bus Speed 7.5 x 333.3 MHz
Base frequency (cores) 333.3 MHz
Base frequency (ext.) 333.3 MHz
Rated Bus speed 1333.3 MHz
Stock frequency 2500 MHz

Chipset
-------------------------------------------------------------------------
Northbridge Intel P45/P43/G45/G43 rev. A3
Southbridge Intel 82801JR (ICH10R) rev. 00
Memory Type DDR3
Memory Size 8 GBytes
Channels Dual, (Symmetric)
Memory Frequency 666.7 MHz (1:2)
CAS# latency (CL) 9.0
RAS# to CAS# delay (tRCD) 9
RAS# Precharge (tRP) 9
Cycle Time (tRAS) 25
Row Refresh Cycle Time (tRFC) 74
Command Rate (CR) 2T
Host Bridge 0x2E20

DIMM # 3
SMBus address 0x52
Memory type DDR3
Module format UDIMM
Module Manufacturer(ID) Corsair (7F7F9E0000000000000000)
Size 2048 MBytes
Max bandwidth PC3-10700H (667 MHz)
Part number CMD4GX3M2A1600C9
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-16-23 @ 444 MHz
JEDEC #2 8.0-8-8-22-30 @ 592 MHz
JEDEC #3 9.0-9-9-24-34 @ 666 MHz
XMP profile XMP-1600
Specification PC3-12800
Voltage level 1.650 Volts
Min Cycle time 1.250 ns (800 MHz)
Max CL 9.0
Min tRP 11.25 ns
Min tRCD 11.25 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 50.63 ns
Min tRFC 110.00 ns
Min tRTP 7.50 ns
Min tRRD 7.50 ns
Command Rate 2T
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-16-27-2T @ 533 MHz (1.650 Volts)
XMP #2 9.0-9-9-24-41-2T @ 800 MHz (1.650 Volts)

DIMM # 4
SMBus address 0x53
Memory type DDR3
Module format UDIMM
Module Manufacturer(ID) Patriot Memory (7F7F7F7F7F020000000000)
Size 2048 MBytes
Max bandwidth PC3-8500F (533 MHz)
Part number 1600EL Series
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-18-24 @ 457 MHz
JEDEC #2 7.0-7-7-20-27 @ 533 MHz
XMP profile XMP-1600
Specification PC3-12800E
Voltage level 1.650 Volts
Min Cycle time 1.250 ns (800 MHz)
Max CL 9.0
Min tRP 11.25 ns
Min tRCD 11.25 ns
Min tWR 15.00 ns
Min tRAS 29.88 ns
Min tRC 46.50 ns
Min tRFC 110.00 ns
Min tRTP 7.50 ns
Min tRRD 6.00 ns
Command Rate 2T
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-16-25-2T @ 533 MHz (1.650 Volts)
XMP #2 7.0-7-7-19-29-2T @ 622 MHz (1.650 Volts)
XMP #3 9.0-9-9-24-38-2T @ 800 MHz (1.650 Volts)

Phaaze88 · Oct 8, 2019

It's in the manual:
4 x240-pin DIMM, Max. 16 GB, DDR3 1600(O.C.)/1333/1066/800 Non-ECC,Un-buffered Memory
Dual Channel memory architecture
[ * Supports one DIMM per channel only when overclocking to 1600MHz.]

Avexolog · Oct 8, 2019

Well, I saw that in the manual as well, but thats nothing helped to me,

I have populated ona channel with 2x2 Corsair RAMs and the second channel 2x2 Patriot RAMs, so 4x2GB in total,

I do not understand why its working just fine when I restart PC from the windows and why its not working if I power on the PC, why its not working from the begining correctly, here is completely list of the RAMs what I have installed

Code:

Memory SPD
-------------------------------------------------------------------------

DIMM #                1
    SMBus address        0x50
    Memory type        DDR3
    Module format        UDIMM
    Module Manufacturer(ID)    Corsair (7F7F9E0000000000000000)
    Size            2048 MBytes
    Max bandwidth        PC3-10700H (667 MHz)
    Part number        CMD4GX3M2A1600C9 
    Number of banks        8
    Nominal Voltage        1.50 Volts
    EPP            no
    XMP            yes
    XMP revision        1.2
    AMP            no
JEDEC timings table        CL-tRCD-tRP-tRAS-tRC @ frequency
    JEDEC #1        6.0-6-6-16-23 @ 444 MHz
    JEDEC #2        8.0-8-8-22-30 @ 592 MHz
    JEDEC #3        9.0-9-9-24-34 @ 666 MHz
XMP profile            XMP-1600
    Specification        PC3-12800
    Voltage level        1.650 Volts
    Min Cycle time        1.250 ns (800 MHz)
    Max CL            9.0
    Min tRP            11.25 ns
    Min tRCD        11.25 ns
    Min tWR            15.00 ns
    Min tRAS        30.00 ns
    Min tRC            50.63 ns
    Min tRFC        110.00 ns
    Min tRTP        7.50 ns
    Min tRRD        7.50 ns
    Command Rate        2T
XMP timings table        CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
    XMP #1            6.0-6-6-16-27-2T @ 533 MHz (1.650 Volts)
    XMP #2            9.0-9-9-24-41-2T @ 800 MHz (1.650 Volts)

DIMM #                2
    SMBus address        0x51
    Memory type        DDR3
    Module format        UDIMM
    Module Manufacturer(ID)    Patriot Memory (7F7F7F7F7F020000000000)
    Size            2048 MBytes
    Max bandwidth        PC3-8500F (533 MHz)
    Part number        1600EL Series
    Number of banks        8
    Nominal Voltage        1.50 Volts
    EPP            no
    XMP            yes
    XMP revision        1.2
    AMP            no
JEDEC timings table        CL-tRCD-tRP-tRAS-tRC @ frequency
    JEDEC #1        6.0-6-6-18-24 @ 457 MHz
    JEDEC #2        7.0-7-7-20-27 @ 533 MHz
XMP profile            XMP-1600
    Specification        PC3-12800E
    Voltage level        1.650 Volts
    Min Cycle time        1.250 ns (800 MHz)
    Max CL            9.0
    Min tRP            11.25 ns
    Min tRCD        11.25 ns
    Min tWR            15.00 ns
    Min tRAS        29.88 ns
    Min tRC            46.50 ns
    Min tRFC        110.00 ns
    Min tRTP        7.50 ns
    Min tRRD        6.00 ns
    Command Rate        2T
XMP timings table        CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
    XMP #1            6.0-6-6-16-25-2T @ 533 MHz (1.650 Volts)
    XMP #2            7.0-7-7-19-29-2T @ 622 MHz (1.650 Volts)
    XMP #3            9.0-9-9-24-38-2T @ 800 MHz (1.650 Volts)

DIMM #                3
    SMBus address        0x52
    Memory type        DDR3
    Module format        UDIMM
    Module Manufacturer(ID)    Corsair (7F7F9E0000000000000000)
    Size            2048 MBytes
    Max bandwidth        PC3-10700H (667 MHz)
    Part number        CMD4GX3M2A1600C9 
    Number of banks        8
    Nominal Voltage        1.50 Volts
    EPP            no
    XMP            yes
    XMP revision        1.2
    AMP            no
JEDEC timings table        CL-tRCD-tRP-tRAS-tRC @ frequency
    JEDEC #1        6.0-6-6-16-23 @ 444 MHz
    JEDEC #2        8.0-8-8-22-30 @ 592 MHz
    JEDEC #3        9.0-9-9-24-34 @ 666 MHz
XMP profile            XMP-1600
    Specification        PC3-12800
    Voltage level        1.650 Volts
    Min Cycle time        1.250 ns (800 MHz)
    Max CL            9.0
    Min tRP            11.25 ns
    Min tRCD        11.25 ns
    Min tWR            15.00 ns
    Min tRAS        30.00 ns
    Min tRC            50.63 ns
    Min tRFC        110.00 ns
    Min tRTP        7.50 ns
    Min tRRD        7.50 ns
    Command Rate        2T
XMP timings table        CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
    XMP #1            6.0-6-6-16-27-2T @ 533 MHz (1.650 Volts)
    XMP #2            9.0-9-9-24-41-2T @ 800 MHz (1.650 Volts)

DIMM #                4
    SMBus address        0x53
    Memory type        DDR3
    Module format        UDIMM
    Module Manufacturer(ID)    Patriot Memory (7F7F7F7F7F020000000000)
    Size            2048 MBytes
    Max bandwidth        PC3-8500F (533 MHz)
    Part number        1600EL Series
    Number of banks        8
    Nominal Voltage        1.50 Volts
    EPP            no
    XMP            yes
    XMP revision        1.2
    AMP            no
JEDEC timings table        CL-tRCD-tRP-tRAS-tRC @ frequency
    JEDEC #1        6.0-6-6-18-24 @ 457 MHz
    JEDEC #2        7.0-7-7-20-27 @ 533 MHz
XMP profile            XMP-1600
    Specification        PC3-12800E
    Voltage level        1.650 Volts
    Min Cycle time        1.250 ns (800 MHz)
    Max CL            9.0
    Min tRP            11.25 ns
    Min tRCD        11.25 ns
    Min tWR            15.00 ns
    Min tRAS        29.88 ns
    Min tRC            46.50 ns
    Min tRFC        110.00 ns
    Min tRTP        7.50 ns
    Min tRRD        6.00 ns
    Command Rate        2T
XMP timings table        CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
    XMP #1            6.0-6-6-16-25-2T @ 533 MHz (1.650 Volts)
    XMP #2            7.0-7-7-19-29-2T @ 622 MHz (1.650 Volts)
    XMP #3            9.0-9-9-24-38-2T @ 800 MHz (1.650 Volts)

Unolocogringo · Oct 8, 2019

Mixing ram is ALWAYS a crap shot.
It might work ,but probably wont.
None of the JEDEC profiles match so the BIOS is trying to find settings that will work with both kits.
And as stated above 1600mhz is only possible with 2 sticks installed.

Phaaze88 · Oct 8, 2019

Unolocogringo said:
Mixing ram is ALWAYS a crap shot.
It might work ,but probably wont.
None of the JEDEC profiles match so the BIOS is trying to find settings that will work with both kits.
And as stated above 1600mhz is only possible with 2 sticks installed.

So much this^...

Avexolog · Oct 8, 2019

Unolocogringo said:
Mixing ram is ALWAYS a crap shot.
It might work ,but probably wont.
None of the JEDEC profiles match so the BIOS is trying to find settings that will work with both kits.
And as stated above 1600mhz is only possible with 2 sticks installed.

So does this mean, that only way how to increase frequency is to buy a 2x4Gb module, and populate only one slot of each channel ?

Phaaze88 · Oct 8, 2019

Avexolog said:
So does this mean, that only way how to increase frequency is to buy a 2x4Gb module, and populate only one slot of each channel ?

That's correct.

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Question P5P43TD PRO 1600Mhz RAM Issue

Avexolog

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