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Thread: Help with RAM timings... GA-MA785GMT-UD2H + Crucial Ballistix DDR3-1333




  1. #1
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    Default Help with RAM timings... GA-MA785GMT-UD2H + Crucial Ballistix DDR3-1333

    Need some help with RAM timings.
    For now, everything is at stock settings.
    Optimized Defaults loaded in BIOS.

    RAM: Crucial Ballistix 2x2GB DDR3-1333 PC3-10600 CL6, 1.8V (6-6-6-20) BL2KIT25664BA1336
    Motherboard: Gigabyte GA-MA785GMT-UD2H (rev 1.0, BIOS f1)
    CPU: AMD Athlon II X4 620
    OS: Vista 64bit

    Here are the default RAM settings in BIOS...

    DRAM Configuration:
    DCTs Mode [Unganged]
    DDR3 Timing Items [Auto]
    CAS# latency [Auto] 9T, 9T
    RAS to CAS R/W Delay [Auto] 9T, 9T
    Row Precharge Time [Auto] 9T, 9T
    Minimum RAS Active Time [Auto] 24T, 24T
    1T/2T Command Timing [Auto] --, --
    TwTr Command Delay [Auto] 5T, 5T
    Trfc0 for DIMM1 [Auto] 110ns, 110ns
    Trfc2 for DIMM2 [Auto] --, --
    Trfc1 for DIMM3 [Auto] 110ns, 110ns
    Trfc3 for DIMM4 [Auto] --, --
    Write Recovery Time [Auto] 10T, 10T
    Precharge Time [Auto] 5T, 5T
    Row Cycle Time [Auto] 33T, 33T
    RAS to RAS Delay [Auto] 4T, 4T
    Bank Intereaving [Enabled]
    Channel Interleave [Enabled]

    Voltage shown in BIOS:
    DDR3 1.5V [1.584V]

    System runs fine but I'd like to run the RAM at it's rated speed.

    Is it as simple as...
    CAS# latency 6T
    RAS to CAS R/W Delay 6T
    Row Precharge Time 6T
    Minimum RAS Active Time 20T
    and Voltage to 1.8V

    I'm guessing I'd maybe have to raise NB voltage a bit, but I really don't know.
    I don't know much about ram settings.
    Also, this is my first AMD system and I'm a bit lost in general.
    Any advice would be appreciated.
    Last edited by someguyonapc; 11-12-2009 at 01:32 AM.

  2. #2
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    Default Re: Help with RAM timings... GA-MA785GMT-UD2H + Crucial Ballistix DDR3-1333

    I believe the memory nuber you provided is incorrect. Here is the closest I could come up with. BL2KIT12864BA1336 If this is correct try these.

    DRAM Configuration:
    DCTs Mode [Unganged]
    DDR3 Timing Items [manual]
    CAS# latency [Auto] 9T, 9T 6T
    RAS to CAS R/W Delay [Auto] 9T, 9T 6T
    Row Precharge Time [Auto] 9T, 9T 6T
    Minimum RAS Active Time [Auto] 24T, 24T 20T
    1T/2T Command Timing [Auto] --, --
    TwTr Command Delay [Auto] 5T, 5T
    Trfc0 for DIMM1 [Auto] 110ns, 110ns
    Trfc2 for DIMM2 [Auto] --, --
    Trfc1 for DIMM3 [Auto] 110ns, 110ns
    Trfc3 for DIMM4 [Auto] --, --
    Write Recovery Time [Auto] 10T, 10T
    Precharge Time [Auto] 5T, 5T
    Row Cycle Time [Auto] 33T, 33T 27T
    RAS to RAS Delay [Auto] 4T, 4T
    Bank Intereaving [Enabled]
    Channel Interleave [Enabled]

    Record PChealth statues for voltage and temps before and after.
    PC Health Status
    Hardware Thermal Control [Enabled]
    Reset Case Open Status [Disabled]
    Case Opened No
    Vcore 1.364V
    DDR3 1.5V 1.536V
    +3.3V 3.280V
    +12V 12.048V
    Current System Temperature 38oC
    Current CPU Temperature 36oC
    Current CPU FAN Speed 1962 RPM
    Current SYSTEM FAN Speed 0 RPM
    Current NB FAN Speed 0 RPM
    CPU Warning Temperature [Disabled]
    CPU FAN Fail Warning [Disabled]
    SYSTEM FAN Fail Warning [Disabled]
    NB FAN Fail Warning [Disabled]
    CPU Smart FAN Control [Enabled]
    CPU Smart FAN Mode [Auto]
    System Smart FAN Control [Enabled]

    DDR3 1.5V [1.584V] 1.8v=+0.3

    MB Intelligent Tweaker(M.I.T.)
    } Advanced Clock Calibration [Press Enter]
    CPU Clock Ratio [Auto] 2800Mhz
    CPU NorthBridge Freq. [Auto] 2000Mhz
    CPU Host Clock Control [Auto]
    x CPU Frequency(MHz) 200
    PCIE Clock(MHz) [Auto]
    HT Link Width [Auto]
    HT Link Frequency [Auto] 2000Mhz
    VGA Core Clock control [Disabled]
    x VGA Core Clock(MHz) 500
    Set Memory Clock [Auto]
    x Memory Clock x6.66 1333Mhz
    } DRAM Configuration [Press Enter]
    ******** System Voltage Optimized ********
    System Voltage Control [Manual]
    DDR3 Voltage Control [Manual]+0.3
    NorthBridge Volt Control [Normal]
    SouthBridge Volt Control [Normal]
    SidePort Mem Volt Controlj [Normal]
    CPU NB VID Control [Manual]+0.15
    CPU Voltage Control [Normal]
    Normal CPU Vcore 1.3250V
    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: Help with RAM timings... GA-MA785GMT-UD2H + Crucial Ballistix DDR3-1333

    Original post edited... RAM is BL2KIT25664BA1336.

    Few things to ask...

    Easytune6 shows DRAM voltage at 1.584V.
    There's also another readding that says DIMM 1.600V.
    Wouldn't this mean I have to raise DRAM in BIOS +0.200V to get 1.8V?

    Why do I need to change 'Row Cycle Time'?
    I'll change it as suggested but I'm curious why.

    Also, when voltages in BIOS are set to 'Normal' will the CnQ feature still work?

    Anyway, I'll give it a shot.
    Thanks for the help.

  4. #4
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    Default Re: Help with RAM timings... GA-MA785GMT-UD2H + Crucial Ballistix DDR3-1333

    No Gigabyte will have it slightly raised for leakage from 1.5v when you go to 1.6v it is normally so close you can't see much difference. Try it and see. Keep in mind you have to save and exit reboot to make these changes active. PC health status will give you your true bios voltage readings. Raise it to +0.3 to aquire 1.8v it will be about 1.86v which is optimal.

    'Row Cycle Time'
    This BIOS feature controls the memory module's Row Cycle Time or tRC. The row cycle time determines the minimum number of clock cycles a memory row takes to complete a full cycle, from row activation up to the precharging of the active row.

    Formula-wise, the row cycle time (tRC) = minimum row active time (tRAS) + row precharge time (tRP). Therefore, it is important to find out what the tRAS and tRP parameters are before setting the row cycle time.

    If the row cycle time is too long, it can reduce performance by unnecessarily delaying the activation of a new row after a completed cycle. Reducing the row cycle time allows a new cycle to begin earlier.

    However, if the row cycle time is too short, a new cycle may be initiated before the active row is sufficiently precharged. When this happens, there may be data loss or corruption.

    For optimal performance, use the lowest value you can, according to the tRC = tRAS + tRP formula. For example, if your memory module's tRAS is 7 clock cycles and its tRP is 4 clock cycles, then the row cycle time or tRC should be 11 clock cycles.

    Also raise CPU NB VID a bit for the 144bit Phenom memory controller if you went from X5.33=1066Mhz to X6.66=1333Mhz
    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


  5. #5
    Join Date
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    Posts
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    Default Re: Help with RAM timings... GA-MA785GMT-UD2H + Crucial Ballistix DDR3-1333

    RAM is set to x6.66 already.

    I'm wondering why you suggest 27T Row Cycle Time.
    Minimum RAS Active Time 20T + Row Precharge Time 6T = 26T
    Not trying to argue... just trying to understand.

    Also, I thought the Athlon II X4 620 uses a 128bit memory controller.
    Maybe I'm wrong about that though.
    Would that change how much extra NB voltage I'd need?

  6. #6
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    Default Re: Help with RAM timings... GA-MA785GMT-UD2H + Crucial Ballistix DDR3-1333

    OH! My mistake. I was thinking in terms of a Phenom with a 5.33Mhz 144bit memory controller. This is where Overclocking comes in and we may need to add voltage for the OC
    OK try 26T if you get corruption ad 1 = 27T. It's better to ad 1 then not. You can try a normal CPU NB VID Control voltage. The cpu has a 6.67Mhz 144bit memory controller, so you should'nt need to add more CPU NB VID voltage. Where you would need to ad it is when you are OCing the memory. I am glad you asked, because I was wrong on some of this. You are correct on some of this. Here is some good info on your cpu. Save it.
    AMD Athlon II X4 620 - ADX620WFK42GI (ADX620WFGIBOX) I hope this helps.
    Last edited by artdrivers; 11-12-2009 at 06:56 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
    Join Date
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    Posts
    52

    Default Re: Help with RAM timings... GA-MA785GMT-UD2H + Crucial Ballistix DDR3-1333

    RAM is now running @ 6-6-6-20.
    Had to raise DRAM by +0.200 to get 1.8V in BIOS (Actual is 1.808V).
    Didn't need to add any CPU NB VID Control voltage.
    Command Rate is 2T now though... on 'Auto' it was 1T.
    Going to try 1T now with the tighter timings and see what happens.

    Thanks again for the help.
    Last edited by someguyonapc; 11-13-2009 at 12:56 AM.

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