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Thread: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair




  1. #1
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    Default Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair

    I'm having stability issues with my new build.

    Quote Originally Posted by Lsdmeasap View Post
    When using 2 X 2 or more of Memory you will have to add more MCH Voltage. How much is up to the ram you are using, the board itself, and overall memory performance.

    Suggested MCH Voltage to add (Even for 2 X 1 GB) is +0.1V. When you start tweaking, Overclocking, or just plain using 2 X 2GB or more you will need to add More MCH Voltage. Amount will Vary but just moving up to +0.15V or +0.2V will usually do it for 2 X 2GB. More of course will need more.

    Trial and error is the only way to know for sure how much your board and ram will need, but +0.3 is almost never necessary. If you find yourself thinking your board needs this much please ask someone as it is most likely you have some other setting that is "Off" that is affecting your stability and making you think you need more.
    Boosting my RAM voltage from stock 1.65v to 1.86v improved stability. But its still all crashy. Any ideas?

    GA-870A-UD3 rev 2.1
    AMD Phenom II X6 1090T Black Edition Thuban 3.2GHz

    CORSAIR DOMINATOR GT 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1866 Desktop Memory Model CMT4GX3M2A1866C9


    MB Intelligent Tweaker(M.I.T.)
    CPU Clock Ratio [auto] x16 3728
    CPU NorthBridge Freq. [auto] x9 = 2097
    Core Performance Boost [enabled]
    CPB Ratio [x16] 3728
    Turbo CPB [enabled]
    CPU Host Clock Control [Auto]
    x CPU Frequency(MHz)[manual] 233
    PCIE Clock(MHz) [Auto]
    HT Link Frequency [auto] 9x= 2097
    Set Memory Clock [manual]
    x Memory Clock 8x=1864
    } DRAM Configuration [manual] 9-9-9-24-34 2t
    ******** System Voltage Optimized ********
    System Voltage Control [manual]
    x DRAM Voltage Control [manual] +.2 1.86v
    x NB Voltage Control [manual] +.1 1.2v
    x NB PCIE Voltage Control [manual] +.1 1.2v
    x CPU NB VID Control Auto [manual] +.1 1.25v
    x CPU Voltage [manual] 1.55v
    Last edited by phosphene; 03-20-2011 at 06:35 AM.

  2. #2
    Chike is offline Senior Member
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    Default Re: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair


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    Default Re: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair

    I believe it's the supported speed for the Phenom II 1090T integrated memory controller.
    It supports {Dual Channel PC3-10667U (DDR3-1333) for 2 Module, Dual Channel PC3-8500U (DDR3-1066), Dual Channel PC2-8500U (DDR2-1066)}
    Integrated DRAM Controller with AMD Memory Optimizer Technology
    ■A high-bandwidth, low-latency integrated memory controller
    ■Supports PC2-8500 (DDR2-1066); PC2-6400 (DDR2-800), PC2-5300 (DDR2-667), PC2-4200 (DDR2-533) or PC2-3200 (DDR2-400) SDRAM unbuffered DIMMs AM2+
    ■Support for unregistered DIMMs up to PC2 8500(DDR2-1066MHz) and PC3 10600 (DDR3-1333MHz) AM3
    ■Up to 17.1GB/s memory bandwidth for DDR2 and up to 21GB/s memory bandwidth for DDR3 ◦Benefit: Quick access to system memory for better performance.
    ↓see below↓
    AMD Phenom
    The cpu integrated memory controller just may not be capable of speeds that high without errors. You may want to try setting the memory speed down a little and see if that clears it up.
    Last edited by artdrivers; 03-20-2011 at 12:33 PM.
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  4. #4
    Chike is offline Senior Member
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    Default Re: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair

    Please don't edit posts as a reply. New posts are free of charge.
    If you try to get the memory at it's rated speed try to leave everything else as close as possible to stock.
    Just bumping up every voltage voltage don't mean it is good.
    The RAM should work at it's rated voltage, one two ticks here and there, more is not always better.
    Set CPU multi 13 or 14 with stock voltage or a bit higher.
    PCI-E voltage stock.
    Try a bit more CPU/NB up to 1.35v

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    Default Re: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair

    Mfg notice: Support for DDR3 1866 (O.C.) (Note 2)/1333/1066 MHz MHz memory modules

    newegg notice: "*To reach DDR3 1866MHz or above, you must install two memory modules and install them in the DDR3_3 and DDR3_4 memory sockets."
    Quote Originally Posted by Chike View Post
    If you try to get the memory at it's rated speed try to leave everything else as close as possible to stock.
    The mobo max ram setting is 1600. I have to OC to reach the 1866mhz ram speed. The AMD mem speed limitations seem to only apply to dual channel mode. I have my ram in single channel mode, slots 3+4.

    Quote Originally Posted by Chike View Post
    Try a bit more CPU/NB up to 1.35v
    ok

  6. #6
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair

    I'd back off the ram voltage as well, you need to increase the CPU NB VID not the ram voltage.

  7. #7
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    Default Re: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair

    Memory Standard DDR3 1866(OC)/1333/1066
    *To reach DDR3 1866MHz or above, you must install two memory modules and install them in the DDR3_3 and DDR3_4 memory sockets.
    Blue slots are for the 1st dual channel white slots are for the second dual channel
    Newegg.com - GIGABYTE GA-870A-UD3 AM3 AMD 870 SATA 6Gb/s USB 3.0 ATX AMD Motherboard
    Newegg said this same thing for GIGABYTE GA-870A-UD3 rev.2.0 when the memory arrangement was 1 and 2 blue 3 and 4 white. (DUAL Channel). GIGABYTE - Motherboard - Socket AM3 - GA-870A-UD3 (rev. 2.0)
    Then Gigabyte changed the banks arangement on all the other revisions. They are blue white blue white.
    GIGABYTE - Motherboard - Socket AM3 - GA-870A-UD3 (rev. 2.1)
    Gigabyte shows the Qualified Vendors List as some 1866Mhz memory running in single or dual mode, but not at the exact way or speed they did this. Just that they tested that memory. Maybe just for P.O.S.T. who knows?
    http://download.gigabyte.ru/memory/m...-ud3_v.2.1.pdf
    You may want to try putting the memory in the 2 white slots which is the second (DUAL CHANNEL) banks. Due to the AMD PhenomII memory controller you may want to try running the memory speed a tad lower.
    Last edited by artdrivers; 03-20-2011 at 01:41 PM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


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    Default Re: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair

    Quote Originally Posted by artdrivers View Post
    You may want to try putting the memory in the 2 white slots which is the second (DUAL CHANNEL) banks.
    OK. RAM in dual channel mode now. thanx for clearing that up.

    concerns:
    erratic cpu voltage in cpu-z. I have the cpu voltage set to 1.55v. And the BIOS say its at 1.55v. But core temp says its at 1.475v and cpu-z shows the cpu voltage jumping between 1.475 and 1.55.

    Is the"cpu thermal control" BIOS setting important to stability?

    My RAID is configed on the "GRAID" SATA ports(not the south bridge controlled bank of sata ports) Is my RAID sharing/robbing pcie bandwidth from the video card? Whenever it crashes, the HDD activity light goes solid.
    Last edited by phosphene; 03-20-2011 at 02:58 PM.

  9. #9
    Chike is offline Senior Member
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    Default Re: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair

    Quote Originally Posted by phosphene View Post
    The mobo max ram setting is 1600. I have to OC to reach the 1866mhz ram speed.
    Actually not, you can set CPU, HT and NB to frequency below their defaults, but that is not always good either.
    To keep everything close to spec, CPU x14, NB and HT x9(assuming HT and NB default is 2000, if not whatever get them close to default).
    This should not require more or at least very little CPU Voltage.

    BTW I see rev 2.1 and above support DDR-2000.
    <s>No settings,</s> but you can see it is possibble: Phenom II X6 and DDR3-2000: It's Working! - X-bit labs

    EDIT: i missed some of the settings in the upper right corner of the image.
    Last edited by Chike; 03-20-2011 at 03:58 PM.

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    Default Re: Unstable GA-870A-UD3 + 6core + 4GB 1866mhz Corsair

    erratic cpu voltage in cpu-z. I have the cpu voltage set to 1.55v. And the BIOS say its at 1.55v. But core temp says its at 1.475v and cpu-z shows the cpu voltage jumping between 1.475 and 1.55.
    Windows has programs from default setup that affect the cpu voltages and frequencies.
    Your running Windows 7? The power options in Balanced mode will regulate the cpu voltage as it also regulates the cpu multiplier. In Balnced mode it will raise and lower both as needed. It's a default from Windows setup. You can fine tune these settings with programs like PhenomMSRTweeker. It should also help on getting voltages and frequencies running smoother. It will also help with the setting of CPU NB VID as Lsdmeasap was rightfully reffering to. You can also adjust the multipliers for each core with it.
    Download PhenomMsrTweaker from SourceForge.net Once in the program and you have made your adjustments it's a good idea to click the service tab and update.
    I agree with Chike. The cpu and memory voltage should be set closer to default specification. Thats a good find on the article from Xbit too.

    +++++UPDATE++++
    x DRAM Voltage Control [manual] +.2 1.86v
    I'm not sure but in manual the voltage should have started at 1.53v or close to it. 1.53 + 0.2 = 1.73
    Can we have a look at your PCHealth Status in BIOS? Lets eye on temperatures too.
    Code:
    PC Health Status
    Hardware Thermal Control [Enabled]
    Reset Case Open Status [Disabled]
    Case Opened No
    Vcore 1.364V
    DDR3 1.5V 1.536V actual DDR voltage
    +3.3V 3.280V
    +12V 12.048V
    Current System Temperature 38oC
    Current CPU Temperature 36oC
    Current CPU FAN Speed 1962 RPM
    Current SYSTEM FAN1 Speed 0 RPM
    Current SYSTEM FAN2 Speed 0 RPM
    Current POWER FAN Speed 0 RPM
    CPU Warning Temperature [Disabled]
    CPU FAN Fail Warning [Disabled]
    SYSTEM FAN1 Fail Warning [Disabled]
    SYSTEM FAN2 Fail Warning [Disabled]
    POWER FAN Fail Warning [Disabled]
    CPU Smart FAN Control [Enabled]
    CPU Smart FAN Mode [Auto]
    System Smart FAN Control [Enabled]
    Last edited by artdrivers; 03-20-2011 at 10:23 PM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


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