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Thread: GA-EP45-DS3L Memory Instability Issue




  1. #1
    Join Date
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    Default GA-EP45-DS3L Memory Instability Issue

    Hello, this mobo is my first build and I'm experiencing the memory instability issue other threads have mentioned in which the system hangs frequently during normal operation after booting into the OS.

    I've looked around extensively for settings that other users have tried and have not had much luck resolving the frequent system hangs. Originally, I was hoping on overclocking, but now I just want to see if I can get the system stable.

    I was wondering if I could get some help on my build:

    Motherboard: GA-EP45-DS3L (f10 BIOS)
    CPU: Quad Core X9650
    Memory: 4 GB (2x2 GB) Crucial Ballistix DDR2 800 MHz
    Gfx: XFX nVidia 9800 GT
    OS: Win7 64-bit (partition 1)/Vista 64-bit (partition 2)

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto
    CPU Clock Ratio ..........................: 9x
    Fine CPU Clock Ratio.....................: 0
    CPU Frequency ...........................: 3.00Ghz (333x9)
    
    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 333Mhz
    PCI Express Frequency (Mhz) .........: 100
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 800mV
    PCI Express Clock Drive.................: 800mV
    CPU Clock Skew (ps)....................: 0ps
    MCH Clock Skew (ps)...................: 0ps
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: 333
    System Memory Multiplier ..............: 2.40B
    Memory Frequency (Mhz) ..............: 800
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................: 4
    tRCD .........................................: 4
    tRP'............................................: 4
    tRAS..........................................: 12
    
    Advanced Timing Control [Press Enter]
    tRRD...........................................: 3
    tWTR..........................................: 3
    tWR............................................: 6
    tRFC...........................................: 52
    tRTP...........................................: 3
    Command Rate (CMD) ....................:2
    
    Channel A
    Static tRead Value.........................:7
    tRD 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
    
    Channel B
    Static tRead Value.........................:7
    tRD 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
    CPU Vcore….……….........................: Auto [1.23750v]
    CPU Termination…............: Auto [1.200v]
    CPU PLL…………………..........: Auto [1.550v]
    CPU Referen.…………...........: Auto [0.805v]
    
    MCH/ICH
    MCH Core……………................: 1.200v
    MCH Reference….……............: Auto [0.760v]
    ICH I/O……………….....1.550V............: Auto [1.550v]
    
    DRAM
    DRAM Voltage ……................: 1.9v
    Frankly, I'm not sure how to go about configuring this and would definitely appreciate any help. Thanks in advance!

  2. #2
    Join Date
    May 2009
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    Default Re: GA-EP45-DS3L Memory Instability Issue

    In addition, using single channel RAM (1x2GB) the system runs fine. I have swapped/tried both memory modules from my Ballistix (4 GB 2x2) kit and verified that they both function properly in single channel mode.

    I've only had the system hangs when using the memory in dual channel.
    I would really like to use both memory modules rather than just 1 stick.

  3. #3
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    Default Re: GA-EP45-DS3L Memory Instability Issue

    bump

  4. #4
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    Default Re: GA-EP45-DS3L Memory Instability Issue

    What's your rated RAM voltage by the manufacter? I see you are using 1.9V, maybe it needs more?
    You should decrease MCH Core voltage to 1.14-1.16V.
    Also, try increasing Static tRead Value to 8-9 and changing strap to 2.0D, maybe that helps.
    Everything else seems like optmized defaults and should work fine.
    GA-EP45-UD3R (F12)
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  5. #5
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    Default Re: GA-EP45-DS3L Memory Instability Issue

    According to the Crucial's website, my 4GB 800 MHz kit's rated voltage should be 2.0V. Out of curiosity, what is the correlation to increasing the RAM voltage with respect to overclocking and/or stability?

    If I reduce the changing strap to 2.0D (with MCH Frequency Latch at 333 MHz), the memory frequency drops to 667 MHz. Is this a sacrifice I'm going to have to go with for my setup?

    Thanks again for the advice! I'll give it and repost my results.

  6. #6
    Join Date
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    Default Re: GA-EP45-DS3L Memory Instability Issue

    yea definately go with crucial's 2.0voltage and maybe try increasing trfc to 54. i have the same mobo as you but different ram if and my trfc is at 54 but if i use 55 and i get bsods during prime 95 small ftts

  7. #7
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    profJim is online now Chief Munchkin + moderator
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    Default Re: GA-EP45-DS3L Memory Instability Issue

    Did you load OPTIMIZED settings in your bios before you made any changes?
    If not, this is probably your main problem.
    Loading Fail-Safe settings is asking for problems.

    Did you install both operating systems on your hard drive using your DS3L motherboard?

    Have you run Memtest86+ from your cd/dvd drive to check for memory errors?

    Sometimes running with all the bios settings set by the bios can lead to instability.

    Check out this post for basic suggested settings after you have loaded OPTIMIZED settings.

    Your DRAM Voltage should be manually set to 2.00 volts.

    Don't give up on overclocking just yet. We will help get your system stable.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
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  8. #8
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    Default Re: GA-EP45-DS3L Memory Instability Issue

    Quote Originally Posted by hkmixxa View Post
    According to the Crucial's website, my 4GB 800 MHz kit's rated voltage should be 2.0V. Out of curiosity, what is the correlation to increasing the RAM voltage with respect to overclocking and/or stability?

    If I reduce the changing strap to 2.0D (with MCH Frequency Latch at 333 MHz), the memory frequency drops to 667 MHz. Is this a sacrifice I'm going to have to go with for my setup?

    Thanks again for the advice! I'll give it and repost my results.
    2.0D means a latch o 400MHz if you set MCH Freq to auto. If you are manualy using the 333MHz strap, that only gives you the option of 2.0B, hence the 667MHz.

    Voltage is very important for stability. While some people are able to run their memory modules with lower voltages that the ones rated by the manufacter, others require higher voltages to get stable at same speed and timings. Most of the time is just a matter of luck.

    You just have to fiddle with your settings untill you learn the BIOS options nad get stable. And you should take in consideration profjim's advice, regarding loading optimized defaults.

    @wutsup: usually failing small fft's in prime is related to the CPU voltage, that's what's probably causing instabillity. Failing blend mode would mean memory instabillity and/or CPU problems. Try increasing the vcore one notch and give it another try.
    Last edited by morph; 05-15-2009 at 06:12 PM.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

  9. #9
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    Default Re: GA-EP45-DS3L Memory Instability Issue

    Quote Originally Posted by morph View Post
    2.0D means a latch o 400MHz if you set MCH Freq to auto. If you are manualy using the 333MHz strap, that only gives you the option of 2.0B, hence the 667MHz.
    Not quite sure what you mean here.

    Setting either 2.00D or 2.00b would both cause memory speed to be DDR-667
    Both of those straps are 1:1, and the current FSB is 333. 333*2=667(ish)

    You seem to misunderstand the latches. They are not the number which is used in calculating memory speed, ie [Latch] * 2 does not equal RAM speed. The latches alter northbridge latancies and hidden timings. One is optimised for 333-399 FSB and the other for 400FSB +

    The only way hkmixxa will get a DDR800 speed is with a 2.4 multiplier on a 333 FSB (NOT latch) or by upping the FSB to 400 and using 2.00D or 2.00B.
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