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Thread: Memory Timings - GA-MA790XT-UD4P




  1. #1
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    Default Memory Timings - GA-MA790XT-UD4P

    Hi Folks,

    Was wondering if someone can tell me a good place to start on tweaking my memory.

    I currenlty am running my machine at 3.817 mhz (19multiplier x 200fsb), with the only change from default in the bios is that I have set the vcore to 1.4v. This seems to be running fine and stable and underload on the stock cooler stays below 60c. I am more than happy with this until I purchase a new CPU cooler.

    But was wondering if any1 could tell me the best way to start tweaking my memory which is currently set as below according to CPU-Z:

    DRAM Freq - 535.8 mhz
    FSB:DRAM - 3:8
    CL - 7 clocks
    tRCD - 7 clocks
    tRP - 7 Clocks
    tRAS - 16 clocks
    tRC - 27 clocks
    CR 1T

    Any pointers you could give me would be great and many thanks for your time :)
    Antec 1200 Case
    Gigabyte GA-MA790XT UD4P - Bios F4I
    AMD Phenom II 955 Black Edition - Xigamatech HDT S1283
    2 x WD Raptor drives (36gb) RAID0 -(O/S and installed Programs)
    4 x WDCaviar Green(1.5tb) - RAID5 - (Storage)
    ATI HD 4870 (1gb DDR5)
    OCZ Platinum AMD Edition 4GB (2x2GB) DDR3 (OCZ3P1600LVAM4GK)
    OCZ Silent 700w PSU

    MS Windows 7 RC1 64bit O/S

  2. #2
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    Default Re: Memory Timings - GA-MA790XT-UD4P

    http://www.ocztechnology.com/product...latinum_series
    Please link us to your memory part numbers. They are important for timings and voltage. You will want to set them manually.
    Last edited by artdrivers; 07-17-2009 at 08:38 PM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


  3. #3
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    Default Re: Memory Timings - GA-MA790XT-UD4P

    HI :)

    I think its one of the following 2:

    OCZ Technology | Products | Memory | OCZ DDR3 PC3-12800 Platinum AMD Edition

    or

    OCZ Technology | Products | Memory | OCZ DDR3 PC3-10666 Platinum AMD Edition

    Its a bit vague I know but the part number displayed by CPU-Z is OCZ3P1600LVAM2G, which I can not find anywhere on the link above that you posted.

    Hope this helps and thanks for your time :)
    Antec 1200 Case
    Gigabyte GA-MA790XT UD4P - Bios F4I
    AMD Phenom II 955 Black Edition - Xigamatech HDT S1283
    2 x WD Raptor drives (36gb) RAID0 -(O/S and installed Programs)
    4 x WDCaviar Green(1.5tb) - RAID5 - (Storage)
    ATI HD 4870 (1gb DDR5)
    OCZ Platinum AMD Edition 4GB (2x2GB) DDR3 (OCZ3P1600LVAM4GK)
    OCZ Silent 700w PSU

    MS Windows 7 RC1 64bit O/S

  4. #4
    Chike is offline Senior Member
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    Default Re: Memory Timings - GA-MA790XT-UD4P

    Quote Originally Posted by Judderman View Post
    Its a bit vague I know but the part number displayed by CPU-Z is OCZ3P1600LVAM2G, which I can not find anywhere on the link above that you posted
    Sometimes part number for dual-channel kits are different than individual modules part number.
    OCZ3P1600LVAM4GK is probably two matched modules of OCZ3P1600LVAM2G.

  5. #5
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    Default Re: Memory Timings - GA-MA790XT-UD4P

    http://china.giga-byte.com/FileList/...0xt-ud4p_e.pdf
    CPU-Z is reading a chip on the module and recording the SPD info the same as SISoftware and Memset 4.0 and your cpu and chipset. So lets use them for first manual adjustments in your bios.
    CPU-Z on the SPD tab you can select different slots to see if it is all the same. I would not adjust voltage to 1.65v without knowing your memory part numbers. It will save alot of bios adjustments to know it's 1.65v. You could have some low voltage memory. You should take the memory out and right down the numbers that are on it. Get the old magnifying glass out. If you change your DRAM timings and frequency you will more than likely need to change the voltage. You could take a chance and set it to 1.65v @ 800Mhz (1600DDR) with your SPD timings and it may work just fine providing the CPU-Z part number is correct.
    I know from first hand experience that the numbers on the memory don't always match the numbers reported by memory software programs like CPUZ, SISandra, or Memset 4.0
    http://forums.tweaktown.com/f73/king...17/#post306230
    It could be OCZ3P1600LVAM4GK as we believe.
    Well we are not to sure so you could try going into bios and press CTRL and F1 at the same time on the bios setup page (first page) Then navigate to MB Intelligent Tweaker(M.I.T.), You can try changing the Dram multiplier to 800MHZ then High light DRAM configuration, press enter, then highlight DDR timing items and change it from Auto to manual. Change all your manual timings to the SPD timings that are greyed out(for reference only). Now you may want to right down all the DDR3 Timing Items and post them here. Below is a template from your manual you can copy or print and use.
    Use your SPD numbers and right them in below.
    Restart your computer and go into bios again and CTRL F1 again and be sure it is still on manual and the numbers are still set to your SPD. If not and the bios reset your voltage on the memory will need to be raised. Please don't forget to set all your other settings back like your RAID and timings again ect... if the bios needs to reset. At this point you should be really close to tweaked for the acception of the voltage. It may not boot into windows. Now you will need to raise voltage up a little more. This is the hard way but concidering we don't know what the memory is we can't just simply change the voltage to 1.65v
    The underscore are the only numbers that will change.(The timings) The second and third sets are greyed for reference only.
    DDR3 Timing Items [Manual] SPD Auto
    x CAS# latency ------------ ___ 7T 5T
    x RAS to CAS R/W Delay------- ___ 7T 4T
    x Row Precharge Time --------- ___ 7T 4T
    x Minimum RAS Active Time ---- ___ 20T 12T
    x 1T/2T Command Timing ___ - - - -
    x TwTr Command Delay -------- ___ 5T 2T
    x Trfc0 for DIMM1 ------------ ___ 90ns 90ns
    x Trfc2 for DIMM2 ___ - - - -
    x Trfc1 for DIMM3 ___ - - - -
    x Trfc3 for DIMM4 ___ - - - -
    x Write Recovery Time ___ 10T 10T
    x Precharge Time ___ 3T 3T
    x Row Cycle Time ___ 11T 11T
    x RAS to RAS Delay ___ 4T 4T
    This is to start you may need to change Northbridgev CPUv and TRFC0~4 and other timings up a little as well. Later
    Last edited by artdrivers; 07-18-2009 at 02:51 AM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


  6. #6
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    Default Re: Memory Timings - GA-MA790XT-UD4P

    ----Update----- I would first set timings to SPD, and memory clock to x8.00, and DDR3 Voltage Control to =1.65v Then reboot into bios to be sure the changes have been made successful. Then run Memtest+ 2.11 The new version from http://www.memtest.org/
    Last edited by artdrivers; 07-18-2009 at 09:49 AM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


  7. #7
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    Default Re: Memory Timings - GA-MA790XT-UD4P

    Hi Folks,

    Have checked the memory and its listed as OCZ Platinum AMD Edition 4GB (2x2GB) DDR3 PC3-12800C7 1600MHz Dual Channel (OCZ3P1600LVAM4GK), hope this helps :)

    Many thanks for your time :)
    Antec 1200 Case
    Gigabyte GA-MA790XT UD4P - Bios F4I
    AMD Phenom II 955 Black Edition - Xigamatech HDT S1283
    2 x WD Raptor drives (36gb) RAID0 -(O/S and installed Programs)
    4 x WDCaviar Green(1.5tb) - RAID5 - (Storage)
    ATI HD 4870 (1gb DDR5)
    OCZ Platinum AMD Edition 4GB (2x2GB) DDR3 (OCZ3P1600LVAM4GK)
    OCZ Silent 700w PSU

    MS Windows 7 RC1 64bit O/S

  8. #8
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    Default Re: Memory Timings - GA-MA790XT-UD4P

    Hi,

    Many thanks for your replys which I have just got round to testing.

    I have set the memory clock at 8x (1600mhz) and tried to boot to the o/s but no joy, so I tried upping the voltage by 0.05v to 1.65v (I think) and again the machine crashed out before it loaded up the o/s.

    I would like to get this memory running at its rated speed of 1600mhz or it seems to me that I will be loosing 1/3 of the memory bandwidth.

    Do I need to adjust the latencies of the memory to acheive this?, if yes which would give me more of a performance gain, lower timings or higher mhz?. I can not seem to find anywhere that states that this memory should be run at different timings for 1600mhz than 1033mhz, so am unsure of what timings I should set.

    Many thanks again for your time :)

    Kind regards,
    Antec 1200 Case
    Gigabyte GA-MA790XT UD4P - Bios F4I
    AMD Phenom II 955 Black Edition - Xigamatech HDT S1283
    2 x WD Raptor drives (36gb) RAID0 -(O/S and installed Programs)
    4 x WDCaviar Green(1.5tb) - RAID5 - (Storage)
    ATI HD 4870 (1gb DDR5)
    OCZ Platinum AMD Edition 4GB (2x2GB) DDR3 (OCZ3P1600LVAM4GK)
    OCZ Silent 700w PSU

    MS Windows 7 RC1 64bit O/S

  9. #9
    Chike is offline Senior Member
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    Default Re: Memory Timings - GA-MA790XT-UD4P

    What hey trying to sell does not always work, what you had may be just as good, have you made any memory benchmarks and compared it to other similar systems?

  10. #10
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    Default Re: Memory Timings - GA-MA790XT-UD4P


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