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Thread: EP45-DS3L Manual memory timing problems




  1. #1

    Default EP45-DS3L Manual memory timing problems

    Hello,

    I've recently build my new budget gaming computer. EP45-DS3L, e8400, HD4870, 2x2GB G.Skill PC8000, etc.

    I have absolutely no stability issues while at auto memory timings, but once I change to manual and set my own, it enters the reboot loop and resets to auto again. The memory is rated at 5-5-5-15 @ 2.0-2.1v. I am manually entering 5-5-5-15 @ 2.1v when it crashes. Mind you this is only at 800Mhz memory speed. Even down to 667Mhz it isn't stable when I enter my own timings.

    With the timings on all auto, I was stable @ 800Mhz memory speed (3.6Ghz CPU), and on auto, it had 5-5-5-15, which is what I entered myself. I am so confused.

    Why, when on auto, it goes to 5-5-5-15 and is stable, but when I do manual 5-5-5-15, it's unstable? I have raised MCH core to 1.3v and tRFC to 62, as advised on threads i searched for, but to no avail.

    Any help would be greatly appreciated. (hopefully LSD will see this, he seems to be very knowledgable)

  2. #2

    Default Re: EP45-DS3L Manual memory timing problems

    Well, just got it up to 4Ghz stable, and the auto timings were 5-6-6-17 on CPU-Z. So all I did is enter those exact timings manually, and it wouldn't boot. This doesn't make sense. I kept all other timings set to auto, as they were before when it was stable.

  3. #3
    Join Date
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    Default Re: EP45-DS3L Manual memory timing problems

    Best to look at the memory guide at the top of the first page of this GB forum.

    However, often instant stability (whilst tightening timings) can be afforded by:

    1) Performance Enhance = STANDARD
    2) tRFC (4GB or more RAM) = 54
    3) The possible need to increment DDR2 Voltage by 0.1volts (or further)*
    4) Test

    *Try to make your target ceiling no higher than 2.0volts (if possible)
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  4. #4

    Default Re: EP45-DS3L Manual memory timing problems

    as far as i know, it's not that easy to change timings especially for 2*2GB, are those CL4?
    you need to change Advanced timing as well, and in channel A and B make sure every setting(I.E trd phase0 adjustment and so on are AUTO) is on auto, except static tread value, try to put in each channel static tread 8-10, what ever works for ya, timings 5-5-5-15, and advanced timings

    tRRD-3-6
    twTR-8-12(u can get them lower if had success in booting)
    Twr 10-14(u can get them lower if had success in booting)
    trFC 52-62
    tRTP 3-6
    COMMAND RATE 2!
    and ofcoure the things that VorLonUK wrote.
    this is what im using(start from highest to lowest till u r stable :D)
    hope i've been any help(im a noob as well :P), every thing i know is from a very smart man! :PP

    EDIT:
    high mch voltage is essential for 2*2 try anywhere between 1.24-to 1.3 start from 1.3.
    Last edited by Dweirdo; 10-15-2008 at 12:03 AM.

  5. #5
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: EP45-DS3L Manual memory timing problems

    Do you have the latest BIOS? If so try manual again with twtr of 12, and twr of 14, static tread 12, driving strength profile of 1066

    If you dont get it let me know and I will post some full ranges for you to use, I have to run to town for a few now so I cannot post them right now. Good luck, look around for g.skill posts and you will likely find some perfect ranges. If not, I will be back soon, if not I will see you tonight and post you some full settings

  6. #6

    Default Re: EP45-DS3L Manual memory timing problems

    Quote Originally Posted by Lsdmeasap View Post
    Do you have the latest BIOS? If so try manual again with twtr of 12, and twr of 14, static tread 12, driving strength profile of 1066

    If you dont get it let me know and I will post some full ranges for you to use, I have to run to town for a few now so I cannot post them right now. Good luck, look around for g.skill posts and you will likely find some perfect ranges. If not, I will be back soon, if not I will see you tonight and post you some full settings
    Yup, I have the latest (F9) bios. Tried twtr of 12 and twr of 14, static tread 12 and driving strength 1066. Wouldn't post.

    The good news is I have my c0 e8400 to 4.05Ghz @ 50*C load, now if I can only get my timings down to 5-5-5-15 as they should be, I'll be good to go.

    I'll post my whole bios settings in a second using your template.

  7. #7

    Default Re: EP45-DS3L Manual memory timing problems

    Here are the settings I'm trying to use. This causes a reboot cycle. Simply changing RAM Timings to Auto makes a prefectly stable system.

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................: N/A
    CPU Frequency ...........................: 4.05GHz (450x9)


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 450MHz
    PCI Express Frequency (Mhz) .........:100MHz

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


    Advanced Clock Control
    CPU Clock Drive...........................:800
    PCI Express Clock Drive.................:800
    CPU Clock Skew (ps)....................: 0
    MCH Clock Skew (ps)...................: 0


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: 400MHz
    System Memory Multiplier ..............: 2.00D
    Memory Frequency (Mhz) ..............: 900
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time............................. 5
    tRCD .............................................. 5
    tRP'.............................................. ... 5
    tRAS.............................................. .. 15

    Advanced Timing Control <<these are extremely loose!
    tRRD...........................................6
    tWTR.......................................... 12
    tWR............................................14
    tRFC...........................................62
    tRTP...........................................6
    Command Rate (CMD) ....................:2

    Channel A
    Static tRead Value............................:12
    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..........................:12
    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
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................: 1.4v
    CPU Termination…..... 1.200V*.......: Auto
    CPU PLL…………………....1.500V*.......: Auto
    CPU Referen.…………....0.755V*.......: Auto
    CPU Reference2………,,0.800V*.......: Auto

    MCH/ICH
    MCH Core…………….....1.100V...........: 1.3v
    MCH Reference….…….0.800V...........:Auto
    MCH/DRAM Ref.…......0.900V...........:Auto
    ICH I/O……………….....1.550V............:Auto
    ICH Core…………...……1.100V............:Auto

    DRAM
    DRAM Voltage ……....1.800V............: 2.120v

    DRAM Termination .…0.900V............: Auto
    Channel A Reference 0.900V............: Auto
    Channel B Reference 0.900V............: Auto

    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]

  8. #8

    Default Re: EP45-DS3L Manual memory timing problems

    i had exactly the same problem, i just couldnt lock the timings!!!
    but it was fixed after i went to every option and did F7(load optimized defaults) nto just to the main screen of M.I.T when i enter any advanced settings or channel settings i pressed F7, then i reboot, then i manually change timings and everything was fine :S
    before that i could lock the timings no matter what.

  9. #9

    Default Re: EP45-DS3L Manual memory timing problems

    Quote Originally Posted by Dweirdo View Post
    i had exactly the same problem, i just couldnt lock the timings!!!
    but it was fixed after i went to every option and did F7(load optimized defaults) nto just to the main screen of M.I.T when i enter any advanced settings or channel settings i pressed F7, then i reboot, then i manually change timings and everything was fine :S
    before that i could lock the timings no matter what.
    Well, that seemed to fix the problem, lol. Here I was trying to do all this complicated stuff when all I needed to do was reset everything and start over. Thanks Dweirdo and LSD.

  10. #10

    Default Re: EP45-DS3L Manual memory timing problems

    OMGGGGGGGG I CANT BELIEVE IT WORKEDDDDDDDD FORRR YAAAAAAAA!
    :p glad it did, and this was the point i thought my posts are useless xDD.
    now we know why most of the ppl, cant set timings manually :P

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