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Thread: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings




  1. #11
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    Hmmmmmm............

    Fine clock delay is the phase adjustments

    So from your last comment, you are making progress with 315 FSB and 3.33C?

  2. #12
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    Yes, I setup the system for 315FSB x 3.33C = 1050MHZ

    At DRAM voltage of only 1.8V, the memory passed Memtest86+ without any errors.

    However, if I push the system to 317FSB x 3.33C it won't even post even if I up the VCore and DRAM voltage to 1.4V and 2.2V respectively. It goes from booting up fine to just no post in 2 MHZ?!?

    So, this suggests the memory is not defective as it can easily do 1050MHZ at just 1.8V, only 16MHZ off its rated speed.

    Under no cirumstance have I been able to get the x.xxD or x.xxB straps to work, so I suspect a timing issue.


  3. #13
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    Please post what you fail with at 317 and I will see what I can suggest

  4. #14
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    Sure thing.

    Bear in mind that although 315MHZ FSB posts, it is NOT stable, probably due to the CPU as the memory passes memtest86+ without error.

    But, I think when it suddenly doesn't post, its a memory issue, as the CPU should still allow post into BIOS with just a 2MHZ FSB increase.

    So here is my settings at 317 FSB:

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio ..........................:11
    Fine CPU Clock Ratio.....................: 0
    CPU Frequency ...........................: 3.487 GHZ


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 317Mhz
    PCI Express Frequency (Mhz) .........:100

    C.I.A.2 .................................:[Disabled]


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    MCH Frequency Latch...............: [AUTO]
    System Memory Multiplier ..............: 3.33C
    Memory Frequency (Mhz) ..............: 1056 MHZ
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................18

    Advanced Timing Control
    tRRD..........................................[Auto] (Tried 6)
    tWTR..........................................[Auto] (Tried 14)
    tWR............................................[Auto] (Tried 14)
    tRFC...........................................60 (Tried 68)
    tRTP...........................................[Auto] (Tried 6)
    Command Rate (CMD) .................2

    Driving Strength Profiles
    Driving Strength .........................1066 (tried 800, 1200 & 1600)

    Channel A&B
    Static tRead Value......................... 5
    5tRD Phase0 Adjustment.................[Auto]
    tRD Phase1 Adjustment...................[Auto]
    tRD Phase2 Adjustment ..................[Auto]
    tRD Phase3 Adjustment...................[Auto]
    Trd2rd(Different Rank).....................[Auto]
    Twr2wr(Different Rank)....................[Auto]
    Twr2rd(Different Rank)....................[Auto]
    Trd2wr(Same/Diff Rank)..................[Auto]
    Dimm1 Clock Skew Control..............[Auto]
    Dimm2 Clock Skew Control..............[Auto]

    Motherboard Voltage Control
    Voltage Type.………... Manual
    CPU
    CPU Vcore................................1.35000V (tried 1.4V)
    CPU Termination….....................1.300V
    CPU PLL…………………...................1.550V
    CPU Reference.…………................[Auto]

    MCH/ICH
    MCH Core……………......................1.2V
    MCH Reference….……..................[Auto]
    ICH I/O……………….......................[Auto]

    DRAM
    DRAM Voltage ……....................: 1.8V (Tried 2.2V)<!-- / message --><!-- sig -->
    Last edited by robertsmith; 11-08-2008 at 08:13 AM.


  5. #15
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    I think it is more a CPU or Voltage issue not ram. Since you are memtest Stable at xx settings at 315 but 317 fails to boot that means most likely your unstabele 315 settings were right on the edge of failure voltage wise

    Static Tread you have WAY to low for now, even it if it memtest stable raise that to 8-9 until you get things figured out

    Try this >>>>
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio ..........................:11
    Fine CPU Clock Ratio.....................: 0
    CPU Frequency ...........................: 3.487 GHZ


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 333Mhz
    PCI Express Frequency (Mhz) .........:100

    C.I.A.2 .................................:[Disabled]


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    MCH Frequency Latch...............: [AUTO]
    System Memory Multiplier ..............: 3.20B
    Memory Frequency (Mhz) ..............: 1066 MHZ
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................5/6
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................18

    Set to highest you have noted below
    Advanced Timing Control
    tRRD..........................................[Auto] (Tried 6)
    tWTR..........................................[Auto] (Tried 14)
    tWR............................................[Auto] (Tried 14)
    tRFC...........................................60 (Tried 68)
    tRTP...........................................[Auto] (Tried 6)
    Command Rate (CMD) .................2

    Driving Strength Profiles
    Driving Strength .........................1066 - 1200

    Channel A&B
    Static tRead Value.........................8-12
    5tRD Phase0 Adjustment.................[Auto]
    tRD Phase1 Adjustment...................[Auto]
    tRD Phase2 Adjustment ..................[Auto]
    tRD Phase3 Adjustment...................[Auto]
    Trd2rd(Different Rank).....................[Auto]
    Twr2wr(Different Rank)....................[Auto]
    Twr2rd(Different Rank)....................[Auto]
    Trd2wr(Same/Diff Rank)..................[Auto]
    Dimm1 Clock Skew Control..............[Auto]
    Dimm2 Clock Skew Control..............[Auto]

    Motherboard Voltage Control
    Voltage Type.………... Manual
    CPU
    CPU Vcore................................1.35000V (tried 1.4V)
    CPU Termination….....................1.340V
    CPU PLL…………………...................1.550V
    CPU Reference.…………................[Auto]

    MCH/ICH
    MCH Core……………......................1.26V
    MCH Reference….……..................[Auto]
    ICH I/O……………….......................[Auto]

    DRAM
    DRAM Voltage ……....................: 2.1

  6. #16
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    I should call you over to my house. I'm sure you could get things to run. Hope you're hourly rate isn't too expensive ;)

    Anyways, it didn't post. I made the voltage changes you suggested and fooled around with a few more settings. I still think its the memory because it won't even post at 800MHZ at certain settings.

    But I have to give the computer to my friend now... I'm sure he wants it. An 800MHZ OC is pretty decent for him anyways, he's probably just going to check his email on it and listen to some MP3s.


  7. #17
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    K, well sorry I could not help. One last thing before you ship it out, did you try >>>
    System Memory Multiplier ..............: 3.33D

    it is a bit faster on the ram but will be more stable overall as the NB is much looser

  8. #18
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    Don't say that... you helped a lot. I really appreciate it. I've never had anyone answer my questions like this on any other forum. Gigabyte is fortunate to have someone like you on their forums.

    As for the OC, I tried 3.33D, for some reason the x.xxD and x.xxB (the 400MHZ and 333MHZ) MCH Latches won't post on with this setup, even at stock settings. I don't understand why.


  9. #19
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    Thanks for your kind words!!!

    But, I am sorry. I only wish I could be at people houses or access BIOS and reboots, ect remotely like remote assistance, that would be great!

    For the D strap you would need a higher MCH (If you did not already have it at 1.26 or so) and a higher then 9 static tread

    If you want to still try before you ship it out, post me what you try with D strap and I will see if I can think of why it fails.

  10. #20
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    Default Re: Help With OC of GA-EP45-DS3L - Latch Frequency & RAM Timings

    MCH at 1.3V and Static tRead at 12 on both channels fails at 4.00D at stock speeds (800MHZ RAM).

    All other settings staying as is.

    Don't have a chance to post settings right now... probably be dropping off the PC today anyways in about an hour, so its ok.


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