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Thread: GA-EP45T-DS3R DDR3-1600 So far so good




  1. #51

    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    I believe what ProfJim said in the post was meant to help you with the problems you were experiencing at the time, not intended to be rules for you to follow for all overclocking situations.
    QX9650 batch L739A761/ GA-EP45-UD3P/ Kingston KHX9200 4x1G

  2. #52
    Join Date
    Jun 2009
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    66

    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    Ah, I gotcha.

    So far it looks like MCH ref @61% actual is working.
    Case: Cooler Master Sniper
    PSU: Thermaltake Toughpower 750
    UPS: APC CS 500
    CPU: Intel QX9650 3.00 GHZ Cooler: Xigmatek Black Knight
    MB : Gigabyte GA-EP45T-DS3R Rev 1 Bios:F2 Bus:333
    Ram: 4GB (2X2GB) DDR3 Corsair XMS TW3X4G1600C9DHX (9 9 9 24 1.8V ver 3.2)
    GPU: EVGA Nvidia 8800 GTX 768 MB
    HDD: Western Digital Raptor 150GB SATA
    DVD: Memorex CD/DVD Writer 52X/32X/16X
    Display: Sharp LC-42D72U 42 in LCD 60Hz
    OS: Windows XP PRO SP3
    Misc: Seagate 300GB SATA Drive in Kingwin hot swap module (used for image backups)


  3. #53

    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    That is very interesting. Out of a gut feeling there may be some difference between the DDR2 and DDR3 P45 boards, I deliberately avoided posting the MCH ref setting that works on my system for that reason. Looks like I did the right thing since the optimal MCH ref setting for my system is 67% (.8V@1.2VTT). If the optimal setting for your DDR3 board is 61% (.74V@1.2VTT?), recommending the 67% setting would not have been helpful at all.
    QX9650 batch L739A761/ GA-EP45-UD3P/ Kingston KHX9200 4x1G

  4. #54
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    The general VTT (aka Cpu Termination or FSB Voltage) recommendation is that it should be at least 0.05 - 0.10 volts lower than Cpu Vcore.

    A google search using:
    vtt fsb voltage
    will provide a lot of information, some of it will be contradictory.
    Some of the reading will be very deep!

    Understanding GTL Reference Voltage is one of the better articles.
    Don't get hung up on the details, just grasp the overall picture.
    Page 7 shows an example where the proper setting increased Prime95 stability from 47 minutes to nearly 13 hours before the test was stopped.

    Do share your results, making sure to follow Lsdme's recommendations for properly setting MCH Reference as it relates to VTT.

    I don't know if the general VTT and MCH Ref settings differ when using DDR3 memory.

    Here's a table that should help when adjusting MCH Ref:

    % of 1.20 values [before auto-adjustment]
    55% = 0.660 || 60% = 0.720 || 65% = 0.780 || 70% = 0.840
    56% = 0.672 || 61% = 0.732 || 66% = 0.792 || 71% = 0.852
    57% = 0.684 || 62% = 0.744 || 67% = 0.804 || 72% = 0.864
    58% = 0.696 || 63% = 0.756 || 68% = 0.816 || 73% = 0.876
    59% = 0.708 || 64% = 0.768 || 69% = 0.828 || 74% = 0.888
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  5. #55
    Join Date
    Jun 2009
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    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    It looks like 62% may be it, although it seems that a CPU V.I.D. of 1.31875 is the absolute lowest I can go - no matter which way I go with MCH ref.
    Case: Cooler Master Sniper
    PSU: Thermaltake Toughpower 750
    UPS: APC CS 500
    CPU: Intel QX9650 3.00 GHZ Cooler: Xigmatek Black Knight
    MB : Gigabyte GA-EP45T-DS3R Rev 1 Bios:F2 Bus:333
    Ram: 4GB (2X2GB) DDR3 Corsair XMS TW3X4G1600C9DHX (9 9 9 24 1.8V ver 3.2)
    GPU: EVGA Nvidia 8800 GTX 768 MB
    HDD: Western Digital Raptor 150GB SATA
    DVD: Memorex CD/DVD Writer 52X/32X/16X
    Display: Sharp LC-42D72U 42 in LCD 60Hz
    OS: Windows XP PRO SP3
    Misc: Seagate 300GB SATA Drive in Kingwin hot swap module (used for image backups)


  6. #56
    Join Date
    Jun 2009
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    66

    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    Thanks for the additional info ProfJim, this has been an extremely productive thread.
    It has definitely helped me, and hopefully it will help others as well.
    Case: Cooler Master Sniper
    PSU: Thermaltake Toughpower 750
    UPS: APC CS 500
    CPU: Intel QX9650 3.00 GHZ Cooler: Xigmatek Black Knight
    MB : Gigabyte GA-EP45T-DS3R Rev 1 Bios:F2 Bus:333
    Ram: 4GB (2X2GB) DDR3 Corsair XMS TW3X4G1600C9DHX (9 9 9 24 1.8V ver 3.2)
    GPU: EVGA Nvidia 8800 GTX 768 MB
    HDD: Western Digital Raptor 150GB SATA
    DVD: Memorex CD/DVD Writer 52X/32X/16X
    Display: Sharp LC-42D72U 42 in LCD 60Hz
    OS: Windows XP PRO SP3
    Misc: Seagate 300GB SATA Drive in Kingwin hot swap module (used for image backups)


  7. #57
    Join Date
    Mar 2009
    Posts
    11

    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    has anyone been able to go over 1600Mhz with out using a 3:5 divider?

  8. #58
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    Using the 4.00 memory multiplier:
    cpu = 400MHz x 4.0 = 1600MHz memory speeds
    cpu = 410MHz x 4.0 = 1640MHz memory speeds
    cpu = 420MHz x 4.0 = 1680MHz memory speeds
    cpu = 430MHz x 4.0 = 1720MHz memory speeds
    cpu = 440MHz x 4.0 = 1760MHz memory speeds
    cpu = 450MHz x 4.0 = 1800MHz memory speeds

    Using the 3.20B multiplier, you can reach similar speeds if your cpu host frequency is 25% higher, for example:
    cpu = 500MHz x 3.2 = 1600MHz memory speeds
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  9. #59
    Join Date
    Jun 2009
    Posts
    66

    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    Hank,
    let us know if you get your RAM past 1400 - and give us all the details.
    Creamsoda and I are in the same boat; having to run slower frequencies but compensating with tighter timings - seems to even out in the wash.
    Case: Cooler Master Sniper
    PSU: Thermaltake Toughpower 750
    UPS: APC CS 500
    CPU: Intel QX9650 3.00 GHZ Cooler: Xigmatek Black Knight
    MB : Gigabyte GA-EP45T-DS3R Rev 1 Bios:F2 Bus:333
    Ram: 4GB (2X2GB) DDR3 Corsair XMS TW3X4G1600C9DHX (9 9 9 24 1.8V ver 3.2)
    GPU: EVGA Nvidia 8800 GTX 768 MB
    HDD: Western Digital Raptor 150GB SATA
    DVD: Memorex CD/DVD Writer 52X/32X/16X
    Display: Sharp LC-42D72U 42 in LCD 60Hz
    OS: Windows XP PRO SP3
    Misc: Seagate 300GB SATA Drive in Kingwin hot swap module (used for image backups)


  10. #60
    Join Date
    Mar 2009
    Posts
    11

    Default Re: GA-EP45T-DS3R DDR3-1600 So far so good

    oh ya dude 1600 is cake. anything over is not. GUYS DO NOT USE THE 3:5 DIVIDER. It is bugged. Run everest and see for your self.
    The E8500







    Now the Q6600



    This is the best I have done.



    875Mhz BUT ITS ON A 3:5 and the bandwidth sucks ass bad!


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