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Thread: Gigabyte H55M-UD2H ram stability issue




  1. #1
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    Default Gigabyte H55M-UD2H ram stability issue

    Hi all,

    I am a newbie here, so sorry in advance for the long description. :) I have recently purchased a GA-H55M-UD2H (bios F4) and installed an i5 650 into it. I am having serious stability issues with a ram kit from Geil (GV34GB1333C7DC). This is a 2x2GB kit with 7-7-7-24 timing installed in the blue slots (as written by the user manual).

    The problem is that system does not boot with 2 sticks installed when memory is set to 1333MHz and timing/voltage is set to auto.
    When system is run with 1 stick, system boots but hangs up in 2-3 mins and restarts. This is a never-ending cycle.

    Tried to set timing manually to 7-7-7-24 did not solve the problem. I set then voltage to 1.56V, still no cure. Setting CPU voltage to 1.19375 neither solved the issue. I did not touch the command rate, QPI and turbo mode selection.

    When set to 1066Mhz, the system boots with both 1 and 2 ram sticks, but hangs up in 5-6 mins and reboots continuously.

    When memory is set to 800Mhz, system runs smooth, no stability issue when everything is set to Auto. In this case, ram is run at 5-5-5-15, according to Everest report.

    Upgraded BIOS to F8 and later to F9c (beta bios), no change in the above mentioned.

    I am wondering if anyone saw such a problem. I know this memory is not on Gigabyte's QVL list, but I guess these should work together. Anyone has an idea how to solve it (apart from selling ram and buying a one listed on the QVL list).

    Thanks in advance and cheers,
    bs

    ps: system components
    GA-H55M-UD2H board
    I5 650 cpu (no overclock)
    onboard Intel HD video
    Chieftec GPS-450AA-101A psu
    Samsung HD502HJ
    Samsung HD321KJ
    LG GH22NS50 odd
    Last edited by bsound; 05-25-2010 at 05:45 PM. Reason: update on config

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Gigabyte H55M-UD2H ram stability issue

    When using only 2 memory modules you must use the White memory slots, as indicated by the manual. Those are labeled DDR3_1+3 but are physical 2+4 from the CPU

    Once you put the memory in the right channels set the ram voltage to spec, and then let us know if you have continued issues, if so you may need to find and set your own stable QPI/Vtt voltage

  3. #3
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    Default Re: Gigabyte H55M-UD2H ram stability issue

    Quote Originally Posted by Lsdmeasap View Post
    When using only 2 memory modules you must use the White memory slots, as indicated by the manual. Those are labeled DDR3_1+3 but are physical 2+4 from the CPU

    Once you put the memory in the right channels set the ram voltage to spec, and then let us know if you have continued issues, if so you may need to find and set your own stable QPI/Vtt voltage
    Hello I'm sorry I was not clear enough on that. The ram sticks are placed in the right slots (the white ones), I was wrong remembering the color. The issues are as mentioned above.

    Can you please give me a stable, error-free QPI/Vtt voltage figure to start the tests with? Thanks very much!

  4. #4
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    Default Re: Gigabyte H55M-UD2H ram stability issue

    i would start with 1.20000v-1.30000v for qpi/vtt,use 1.2v to start with and raise one click at a time untill it stops freezing
    Gigabyte z77x UP4-TH F11c Modded Bios
    Intel i7 3770k 24/7@4.8ghz 1.38v Turbo llc +0.165v dvid multithreading enabled
    Samsung Green(MV-3V4G3D/US) 8GB @2133mhz 9-10-10-21-1t 1.55v
    Thermalright Silver Arrow Cpu Cooler
    1xSamsung 840 pro 256 Gb SSD windows 8.1 pro 64bit
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    Xfx Pro 750w silver rated Psu 80+
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  5. #5
    Lsdmeasap's Avatar
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    Default Re: Gigabyte H55M-UD2H ram stability issue

    Ohh ok, good you are using the right slots then.

    Are you setting your memory voltage to spec? I see it is 1.5, maybe auto gives too much or not enough, try setting this manually to 1.5-1.55

    Then try QPI/Vtt of 1.15-1.2

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    Default Re: Gigabyte H55M-UD2H ram stability issue

    Quote Originally Posted by Lsdmeasap View Post
    Ohh ok, good you are using the right slots then.

    Are you setting your memory voltage to spec? I see it is 1.5, maybe auto gives too much or not enough, try setting this manually to 1.5-1.55

    Then try QPI/Vtt of 1.15-1.2
    I made several tests, tried to increase and decrease DRAM voltage between 1.40 and 1.60, but no solution was found. Leaving it on Auto results in a stable 1.55V, according to Everest. But this only applies to the speed of 800Mhz, as there is hardly any time to check such figures when system random collapses (if set to 1066Mhz or 1333Mhz).

    I really appreciate the help you gave me. Will give an update on the issue later today.

    ps: I read several suggestions on finding faulty ram modules. In that case, i should place one stick into the socket closest to the CPU. How come this does not bother the memory handling? The user manual strongly asks for the usage of the white sockets when using only 1 module. The closest one is blue on my board. Cheers..

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    Default Re: Gigabyte H55M-UD2H ram stability issue

    you need to test with qpi/vtt voltages suggested above,its most likely this thats causing instability
    Gigabyte z77x UP4-TH F11c Modded Bios
    Intel i7 3770k 24/7@4.8ghz 1.38v Turbo llc +0.165v dvid multithreading enabled
    Samsung Green(MV-3V4G3D/US) 8GB @2133mhz 9-10-10-21-1t 1.55v
    Thermalright Silver Arrow Cpu Cooler
    1xSamsung 840 pro 256 Gb SSD windows 8.1 pro 64bit
    1xSamsung f4 HD204UI 2tb hard drive Storage
    Powercolor 7970 3gb V3 @1150mhz core/1700mhz mem,1.150v Accelero aftermarket air cooler 55c max
    Razer Lycosa Keyboard
    Logitech X-530 5.1 Speakers
    Lite-On iHAS124-19 24x Sata DVDRW
    K-World Hybrid DVB-T 210SE Digital T.V Card
    L.G E2260V L.E.D 1920x1080 Monitor
    Xfx Pro 750w silver rated Psu 80+
    Fractal Arc Midi Case

    http://i38.tinypic.com/14myvfa.jpg x58 ud5 <=3.8ghz + 4.2ghz Overclock Template!!
    http://www.youtube.com/user/warren304#p/u Visit Me On Youtube

    Lots Of Gaming Videos With X58 Ud5 System And Gpu On My Youtube Channel!!
    Just Uploaded New Battlefield 4 Video!!!!!!!!!!!!!!!!!!!!!!

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    Default Re: Gigabyte H55M-UD2H ram stability issue

    Quote Originally Posted by wazza300 View Post
    you need to test with qpi/vtt voltages suggested above,its most likely this thats causing instability
    ok, thanks very much!

  9. #9
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    Default Re: Gigabyte H55M-UD2H ram stability issue

    And you must use the white slots when using one or two sticks, you can use the blue ones.

  10. #10
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    Default Re: Gigabyte H55M-UD2H ram stability issue

    Quote Originally Posted by Lsdmeasap View Post
    And you must use the white slots when using one or two sticks, you can use the blue ones.
    OK guys this is driving me insane. First of all I would like to mention that whatever settings I use for the RAM at 1333 or 1066 the system runs the memory at 8-7-7-24 with 2T command rate (remember the spec 7-7-7-24 & 1T).
    I found profile voltages from SPD, this is 1.5V for DRAM and 1.1V for QPI. Lowering the DRAM voltage to 1.4 (1.4 and 1.5 are the setting in bios) while increasing QPI voltage to 1.19 and 1.21 gave the longest life to the computer. In this case Prime95 could run for 8 minutes before system halt.
    Nevertheless no voltage setting between 1.05 and 1.27 for QPI and 1.40/1.50/1.56 for dram delivered a stable system.
    Furthermore, even when I could use the system with 1 memory stick installed, the system could never start when the second one was inserted into the other white slot.

    Dual channel only works when memory speed is set to 800Mhz will all other setting left on Auto.

    What do you think? Is it rather a mobo-related issue? Thanks..

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