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Thread: EP45-DS3R and 4 x 2GB Dual Channel Setup




  1. #1
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    Default EP45-DS3R and 4 x 2GB Dual Channel Setup

    The memory timing sticky has lots of good information about setting up 2 x 2GB memory configuration that I had no idea aobut, but I still have a few questions.


    I have a Intel Q6600 running at the default 2.4 Ghz (I haven't attempted an overclock yet) with the following 2 sets of dual channel memory installed on my EP45-DS3R (just recently updated to the most recent bios):

    2 x 2GB OCZ DDR2 PC-6400 800 MHz Nvidia SLI Edition (4-4-4-15, 2.1V)
    2 x 2GB Crucial Ballistix DDR2 PC-6400 800 MHz (4-4-4-12, 2.0V)

    What should the bios settings look like for DRAM Performance Control, Standard Timing Control, Advanced Timing Control, Channel A, and Channel B, MCH Core Voltage, and DRAM Voltage when using two different types of memory like this? If I choose to remove the set with the worse timing (OCZ) will it improve my system performance?
    Last edited by ykr919; 11-13-2008 at 11:19 PM. Reason: No title

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: EP45-DS3R and 4 x 2GB Dual Channel Setup

    You should not be mixing ram, you are going to have nothing but headaches. I cannot advise any settings for that really, other then very POOR performing ones that will be loose enough to allow them to MAYBE work together. But in the end it is not very likely at all that you would ever get that stable.

    Yes you would be much better off with the Crucials then until you can get more of either that would be the same. I would use one 2x2 set and sell the other and buy a new matching set if you want to run 8GB

  3. #3
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    Default Re: EP45-DS3R and 4 x 2GB Dual Channel Setup

    OK, I have removed the ocz set of memory from the equation. What would the appropiate bios settings be for the single set of Crucial Ballistix 2x2GB?

  4. #4
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    Default Re: EP45-DS3R and 4 x 2GB Dual Channel Setup

    K, try this for stock >>>>
    [code]MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Fast
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 2.4


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 266Mhz
    PCI Express Frequency (Mhz) .........:Set to 100

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


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<<
    PCI Express Clock Drive.................: <<<
    CPU Clock Skew (ps)....................: <<<
    MCH Clock Skew (ps)...................: <<< 50-150


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 3.00A
    Memory Frequency (Mhz) ..............: 800
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................4
    tRCD .........................................4
    tRP'...........................................4
    tRAS..........................................12

    Advanced Timing Control
    tRRD...........................................3-4
    tWTR..........................................3-6
    tWR............................................4-6
    tRFC...........................................52-62
    tRTP...........................................3-5
    Command Rate (CMD) ....................:2

    Driving Strength Profiles
    Driving Strength ............................800-1066 (1066 may be better, benchmark both)

    Channel A
    Static tRead Value.........................:6/7-10
    tRD Phase0 Adjustment...................:<<< Leave for all below as well
    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 ps
    Dimm2 Clock Skew Control...............:Auto ps

    Channel B
    Static tRead Value.........................:6/7-10
    tRD Phase0 Adjustment...................:<<< Leave for all below as well
    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 ps
    Dimm2 Clock Skew Control...............:Auto ps

    Motherboard Voltage Control
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................:Auto
    CPU Termination…..... 1.200V*.......: <<< Set to what you see for stock, same applies as below

    CPU PLL…………………....1.500V*.......: << Please set to stock, Auto overvolts this way to much

    CPU Referen.…………....0.755V*.......: <<< .64% Of Vtt (Termination above) Auto Will set this correctly

    CPU Reference2………,,0.800V*.......:<<< .67% Of Vtt (Termination above) Auto Will set this correctly

    MCH/ICH
    MCH Core…………….....1.100V...........: << 1.24-1.26
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< Leave
    ICH Core…………...……1.100V............: <<< Leave

    DRAM
    DRAM Voltage ……....1.800V............: 2.0
    DRAM Termination .…0.900V............: <<< Leave
    Channel A Reference 0.900V............: <<< Leave
    Channel B Reference 0.900V............: <<< Leave

    Advanced Settings
    Limit CPUID Max. to 3.....................: [Disabled]
    No-Execute Memory Protect............: [Enabled]
    CPU Enhanced Halt (C1E)................: [Disabled]
    C2/C2E State Support....................: [Disabled]
    x C4/C4E State Support..................: [Disabled]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.........................: [Disabled]
    Virtualization Technology................: [Disabled] Enabled if you use Vmware/Virtual PC

    Integrated Peripherals

  5. #5
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    Default Re: EP45-DS3R and 4 x 2GB Dual Channel Setup

    I have done as you suggested and picked up a second set of the same maker and model ram so now I have 2 sets of dual channel RAM to rum (total 8 GB). How would these settings change/need adjustment for the additional set of 2 x 2 GB?

  6. #6
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    Default Re: EP45-DS3R and 4 x 2GB Dual Channel Setup

    What did you get stable and use on 2x2 and I will advise? IN genral >>>
    more trfc, and maybe more trtp, twr, twtr, and likely more MCH Voltage and MCH Skew

  7. #7
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    Default Re: EP45-DS3R and 4 x 2GB Dual Channel Setup

    I used all the setting listed in the above post. Those that had options I set as follows:

    Advanced Timing Control

    tRRD...........................................5
    tWTR..........................................5
    tWR............................................5
    tRFC...........................................56
    tRTP...........................................4
    Command Rate (CMD) ....................:2

    Channel A
    Static tRead Value.........................:7

    Channel A
    Static tRead Value.........................:7

    Motherboard Voltage Control
    Voltage Type.………... Manual

    CPU

    CPU Vcore….……….........................:Auto
    CPU Termination…..... 1.35
    CPU PLL…………………....1.35
    CPU Referen.…………....AUTO
    CPU Reference2………..AUTO

    MCH/ICH
    MCH Core…………….....1.100V...........:1.26

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