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Thread: P55A UD3 - 16GB RAM Errors




  1. #1
    perfectn64 is offline Junior Member
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    Question P55A UD3 - 16GB RAM Errors

    Hi. First post here. I've been trying for weeks to solve my problem, but no luck so I need help.

    I built a PC almost 3 years ago to the day and for 2 years and 11 months it's run perfectly. At the end of November I decided to upgrade my 4GB (2 sticks) RAM to 16GB (4 sticks) to handle all my multitasking. Everything worked fine for a week or two, but then one day the computer wouldn't POST. When I turned it on the hard drive would start spinning, the 4 phase lights came on, but the CPU fan wouldn't start and there were no beeps. I took out the 16GB ram and put it back in and then it worked fine. Since then I've been getting random Blue Screens and freezing. Most Blue Screens happened after waking from standby, perhaps because the current state was being saved to RAM and the RAM was being stressed. Since I installed it at the end of November I've got 13 Critical Error 41's in the Event Viewer in Windows. When I get the computer to POST again after it won't, I go into the BIOS and I get a warning in red saying that the computer failed to boot because of a voltage change or recent overclock.

    I'm thinking that either the motherboard or possibly the memory controller is having issues because I'm using 16GB RAM, which is the maximum its specs say it can handle or else one of my RAM sticks is bad.

    This is my system:
    Old Stable RAM: 4GB G.Skill DDR3 PC3-12800 ECO Series (7-8-7-24, 1.35V) Dual Channel kit
    New Unstable RAM: 2 x 8GB G.Skill DDR3 PC3-12800 1600MHz Ripjaw Series (9-9-9-24) Dual Channel kit


    Case: LIAN LI PC-7FN Mid Tower Chassis black
    Mobo: Gigabyte GA-P55A-UD3 rev.1 with F11 Bios
    CPU: Intel i5-750
    Cooler: Cooler Master Hyper 212 Plus
    Thermal Paste: Arctic Silver 5
    GPU: Sapphire Radeon HD 5770 1GB GDDR5
    PSU: Corsair HX 650W PSU
    SSD (primary): Intel X25M 80GB SSD
    HDD (secondary):Samsung SpinPoint F3 1TB SATA2
    CD: Sony NEC Optiarc DVD±RW burner AD-7241S
    OS: Windows 7 64 Bit Professional


    I've taken many different troubleshooting steps, but nothing has identified the problem.

    • I ran Memtest 86+ with the following:
      • 4DIMMS - get errors
      • Individually in slots 1 or 3 for between 1-7 hours - no errors
      • - curiously one module gave errors in slot 3, but when I ran it in slot 1 or slot 3 again it gave no errors (maybe this module is the problem and I just need to run it for longer?
      • Everytime I run all 16GB at once, the errors seem to appear when it is testing between 16000GB and 16384MB, I don't know if that is an indication of what's wrong?


    For all those tests I was running the Motherboard with Optimized defaults in the BIOS. Previously on my 4GB RAM I had the computer using XMP and also had the speedstep and other CPU energy saving features on (no turbo boost) and that was solid. I have tried changing many different BIOS settings and nothing seems to make the 16GB stable.

    The computer seems to run solid for like 3-6 days before crashing again. Clearing the CMOS allows me to turn it on successfully when I can't get it to POST sometimes.

    I read that using all 4 slots means I need to increase the DRAM voltage above 1.5V. The Motherboard already runs it at 1.58V, so I tried 1.6 and 1.62V. I also tried increasing the QPI/VTT from the default 1.1V to 1.21V. None of these changes can make me get no errors with 16GB in Memtest. Currently I have manually set all the timings to match the 9-9-9-24 required by the RAM and have the following other settings:

    QPI/VTT Voltage..........1.100v.....[1.21V]
    DRAM Voltage..............1.500v.....[1.62V]

    CPU Clock Ratio 17x
    >>>>> Standard Clock Control <<<<<

    BCLK Frequency ..........................[160]
    Extreme Memory Profile (X.M.P.)..........[Disabled]
    System Memory Multiplier (SPD)...........[10]
    Memory Frequency (MHz)................1600 (non editable)
    PCI Express Frequency (MHz)..............[Auto]

    Advanced Memory Settings:

    Extreme Memory Profile (X.M.P.)..........[Disabled]
    System Memory Multiplier (SPD)...........[Auto]
    Memory Frequency (MHz)................1600 (non editable)
    Performance Enhance (SPD)............. [Standard]



    What do you think I should do? I would rather not go back to my 4GB RAM, but I can't really live with an unstable system. Should I try and run that potentially faulty RAM stick for longer in Memtest and then if I get errors again, should I just return that stick? What other tests can I do, or is Memtest the best one? Do I need to increase the DRAM or QPI/VTT voltages more?

    I'd really appreciate any help. Thanks!

  2. #2
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    Default Re: P55A UD3 - 16GB RAM Errors

    you could need more qpi/vtt,im using 1.32v with just 8gb on a h55 board,try 1.32v and see if errors persist
    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!!!!!!!!!!!!!!!!!!!!!!

  3. #3
    perfectn64 is offline Junior Member
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    Default Re: P55A UD3 - 16GB RAM Errors

    Quote Originally Posted by wazza300 View Post
    you could need more qpi/vtt,im using 1.32v with just 8gb on a h55 board,try 1.32v and see if errors persist
    I set the qpi/vtt to 1.31V (it only had odd numbers) and ran Memtest. It started giving errors again within 5 minutes. Any other ideas? I think I might try the one module which failed by itself again and see what that brings up.

  4. #4
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    Default Re: P55A UD3 - 16GB RAM Errors

    yeah try that one stick,you might have a faulty module
    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!!!!!!!!!!!!!!!!!!!!!!

  5. #5
    perfectn64 is offline Junior Member
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    Default Re: P55A UD3 - 16GB RAM Errors

    I've had that one module running in Memtest in slot 1 for 3 hours now. It has had 4 successful passes and almost finished a 5th. So it looks like that module is actually fine.
    Any other ideas? I'm a bit stuck at this stage.

  6. #6
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    Default Re: P55A UD3 - 16GB RAM Errors

    you still could need more dram/qpi/vtt with 16gb its alot for those cpu's/boards

    maybe 1.35-1.38v qpi and 1.65v dram?
    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!!!!!!!!!!!!!!!!!!!!!!

  7. #7
    perfectn64 is offline Junior Member
    Join Date
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    Ireland
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    Default Re: P55A UD3 - 16GB RAM Errors

    Quote Originally Posted by wazza300 View Post
    you still could need more dram/qpi/vtt with 16gb its alot for those cpu's/boards

    maybe 1.35-1.38v qpi and 1.65v dram?
    Ok cool I'll try upping the voltage on them. After the PC froze again last night I decided for now to put back in the old reliable RAM because I have an important report I need to write for next week and I can't be having crashes while I write. I'll try those voltages again next week and let you know.

    Thanks again!

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