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Thread: Need some help with timings on a GA X48-DQ6




  1. #1
    Join Date
    Sep 2008
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    Default Need some help with timings on a GA X48-DQ6

    I've built a few machines before, but as this is my first Gigabyte mobo, I'm not quite used to having so much control. Essentially, I need a bit of help with some of the finer points of tweaking the BIOS. I'm not really looking to overclock, but am not adverse to doing so, either. I've read the stickies, but it seems like I'm missing something because when I try tightening my memory timings, the system becomes unstable. I'm thinking it's probably something simple that I just overlooked.

    I'm trying to tweak a GA X48-DQ6 with a QX6700, 2 x 2 GB Mushkin XP2-6400, and a GeForce 8800GTX.

    Here's what I currently have everything set at:

    Robust Graphics Booster [Auto]
    CPU Clock Ratio [10]
    CPU Frequency 2.66 (266 x 10)
    CPU Host Clock Control [Disabled]
    CPU Host Frequency [266]
    PCI Express Frequency [Auto]
    C.I.A.2 [Disabled]
    Performance Enhance [Standard]
    Extreme Memory Profiles [Disabled]
    System Memory Multiplier [Auto]
    Memory Frequency [800]
    Dram Timing [Auto]
    Standard Timing Control
    CAS [5] 4
    Dram RAS to CAS# [5] 4
    DRAM RAS Precharge [5] 4
    Precharge Delay [18] 12

    Advanced Timing Control
    ACT to ACT [3] Auto
    Rank Write to Read [3] Auto
    Write to Precharge [6] Auto
    Refresh to ACT [52] Auto
    Read to Precharge [3] Auto
    Static tRead [5] Auto
    Static tRead Phase [1] Auto
    Command Rate [2] Auto

    Clock Driving and Skew Control
    CPU/PCIEX Clock Driving Control [800mV]
    CPU Clock Skew Control [Normal]
    GMCH Clock Skew Control [Normal]

    System Voltage Control
    DDR2 OverVoltage Control [+0.30V]
    PCI-E OverVoltage Control [Normal]
    (G)MCH OverVoltage Control [+0.150]
    CPU Voltage Control [Normal]

  2. #2
    Join Date
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    Location
    Canberra, Australia
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    Default Re: Need some help with timings on a GA X48-DQ6

    try these advanced timings out

    ACT to ACT [3] Auto -> 3-6
    Rank Write to Read [3] Auto ->4-7
    Write to Precharge [6] Auto ->3-7
    Refresh to ACT [52] Auto -> 54-62
    Read to Precharge [3] Auto -> 4-7
    Static tRead [5] Auto ->7-11
    Static tRead Phase [1] Auto -> 0
    Command Rate [2] Auto -> 2

    start with your timings loose to get stable and then tighten them up later to increase performance... when tightening them, go one at a time and do a round or 2 of MemTest86+ (Memtest86+ - Advanced Memory Diagnostic Tool) between each change and keep going until you start getting errors... also, your MCH Skew could go up to 50 or 100ps
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  3. #3
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Need some help with timings on a GA X48-DQ6

    Try these ranges, and what Model # of Mushkins do you have? >>>>

    Code:
    Robust Graphics Booster [Fast]
    CPU Clock Ratio [10]
    CPU Frequency 2.66 (266 x 10)
    CPU Host Clock Control [Disabled]
    CPU Host Frequency [266]
    PCI Express Frequency [100]
    C.I.A.2 [Disabled]
    Performance Enhance [Standard]
    Extreme Memory Profiles [Disabled]
    System Memory Multiplier [3.00A]
    Memory Frequency [800]
    
    Dram Timing [Manual]
    Standard Timing Control
    CAS [5] 4
    Dram RAS to CAS# [5] 4
    DRAM RAS Precharge [5] 4
    Precharge Delay [18] 12
    
    Advanced Timing Control
    ACT to ACT 3-4
    Rank Write to Read 3-6 (May need to use 9-11, some boards it is better, some just have to have it set that way)
    
    Write to Precharge 4-6
    Refresh to ACT 52-62
    Read to Precharge 3-6
    Static tRead [5] 6-7 at stock, 5 may work but you should attempt that later
    Static tRead Phase [1] Auto << always leave on Auto
    Command Rate [2] << Set to 2
    
    Clock Driving and Skew Control
    CPU/PCIEX Clock Driving Control [800mV]
    CPU Clock Skew Control [Normal]
    GMCH Clock Skew Control [Normal]
    
    System Voltage Control
    DDR2 OverVoltage Control [+0.30V]
    PCI-E OverVoltage Control [Normal]  I always add +0.1 for stability, but without a overclock you are likely fine here
    (G)MCH OverVoltage Control [+0.150] << May need +0.2 - +0.25V
    CPU Voltage Control [Normal]

  4. #4
    Join Date
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    Default Re: Need some help with timings on a GA X48-DQ6

    Quote Originally Posted by Lsdmeasap View Post
    Try these ranges, and what Model # of Mushkins do you have? >>>>
    Thank you both!

    My Mushkins are 996850 (2 x2 GB XP2-6400). I got them to replace some Corsair DIMMs that prevented this mobo from posting and based on reading your advice in other threads.

  5. #5
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Need some help with timings on a GA X48-DQ6

    Ahh, Nice! I just got my set of those. Mine will post at 800Mhz 4-4-3-10 trd of 5 for me, but I do not use 800 and have not tested how high they will go. I did run them at 555-12 1066 and could see they would go much futher.

    They will get way up there easy. Here is some of my initial tweaking with them, and another users testing as well >>>
    http://forums.tweaktown.com/f69/mush...-memory-28002/

    The above is a good range for you to start working at for sure then

  6. #6
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    Default Re: Need some help with timings on a GA X48-DQ6

    I'm really happy with them. Now that I've got the timings somewhat tightened and very stable, I'm half considering doing an OC on this thing. I don't want to push it too much, since I'm already idling at ~40 degrees on my CPU and ~45 degrees on the NB.

    The only stability problem that I had, and I should've foreseen it, was minor graphics instability after setting RGB to Fast. Setting it back to Auto corrected that, though.
    Last edited by najaboy; 10-19-2008 at 08:28 AM.

  7. #7
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Need some help with timings on a GA X48-DQ6

    Do you have a good fan? Maybe you should get one before you start overclocking.

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