My 1866 mhz ram is downclocked to 1066 mhz

Hey guys I have problem with my GA-EX58-UD4P motherboard downclocking my 1866 mhz ram to 1066 mhz. I don't have much experience in overclocking. Is there any easy way to get ram to it's native speed?

Cooler Master RC-690 case
Intel i7 920 D0 processor
Scythe Mugen 2 cooler
Gigabyte GA-EX58-UD4P motherboard
Team Group PC3-15000 "Xtreem" KIT 6144MB 1866 MHz DDR III RAM (motherboard runs it at 1066 mhz, I don't know how to make it run at 1866 mhz, I'm a noob I know :( )
Sapphire Radeon HD 4890 1024MB graphic card
LC Power LC8850 "Arkangel" v2.2 PSU
22 answers Last reply
More about 1866 downclocked 1066
  1. The easiest way is to use XMP and Profile1 settings in the BIOS**. Otherwise and preferred set everything manually: Memory Multiplier -> 14 (14 * 133.33MHz = 1866MHz), DRAM Voltage-> spec (1.64v if kit is 1.65v), QPI/DRAM Voltage (if needed)-> 1.30v (1.65v RAM), CAS Timings (Quick in Ch A & B) -> per spec {e.g. 9-9-9-24-2N (CAS-TRCD-TRP-TRAS-CMD) CMD is Command Rate}.

    I am not an XMP fanboy especially with Gigabyte, instability issues, so I set everything manually.

    **verify the kit is XMP, use CPU-z and look at the 'SPD' tab for 'XMP-1866' in the right column; CPU-z -> http://www.cpuid.com/softwares/cpu-z.html if there's no XMP then RAM must be set manually.

    Footnote - often >DDR3-1600 requires the BCLK to be set to 160MHz or higher, and in doing so this also overclocks the CPU.

    i7-920 BCLK 133.33MHz * 20 = 2667MHz = 2.67GHz <or> BCLK 160MHz * 20 = 3200MHz = 3.2GHz
    Correction: BCLK 160MHz * X = 2667MHz, X = 2667MHz / 160MHz, X = 16.7
    rounding up X = CPU Multiplier = 17 ; 17 * 160MHz = 2720MHz = 2.72GHz

    Therefore if BCLK = 133.33 and RAM is unstable or errors during Memtest86+ or Prime95 + Blend then add to the manual settings above:

    BCLK = 160MHz
    CPU Multiplier = 17
  2. jaquith said:
    The easiest way is to use XMP and Profile1 settings in the BIOS**. Otherwise and preferred set everything manually: Memory Multiplier -> 14 (14 * 133.33MHz = 1866MHz), DRAM Voltage-> spec (1.64v if kit is 1.65v), QPI/DRAM Voltage (if needed)-> 1.30v (1.65v RAM), CAS Timings (Quick in Ch A & B) -> per spec {e.g. 9-9-9-24-2N (CAS-TRCD-TRP-TRAS-CMD) CMD is Command Rate}.

    I am not an XMP fanboy especially with Gigabyte, instability issues, so I set everything manually.

    **verify the kit is XMP, use CPU-z and look at the 'SPD' tab for 'XMP-1866' in the right column; CPU-z -> http://www.cpuid.com/softwares/cpu-z.html if there's no XMP then RAM must be set manually.

    Footnote - often >DDR3-1600 requires the BCLK to be set to 160MHz or higher, and in doing so this also overclocks the CPU.

    i7-920 BCLK 133.33MHz * 20 = 2667MHz = 2.67GHz <or> BCLK 160MHz * 20 = 3200MHz = 3.2GHz
    Correction: BCLK 160MHz * X = 2667MHz, X = 2667MHz / 160MHz, X = 16.7
    rounding up X = CPU Multiplier = 17 ; 17 * 160MHz = 2720MHz = 2.72GHz

    Therefore if BCLK = 133.33 and RAM is unstable or errors during Memtest86+ or Prime95 + Blend then add to the manual settings above:

    BCLK = 160MHz
    CPU Multiplier = 17


    Hey, I'll try that out. I checked, kit is XMP compatible, but I don't know what is the maximum voltage for my ram. ATM I have it on 1,5 voltage. If I turn Profile 1 on, it sets ram voltage to 1,75 but I'm afraid it will fry something. I made some bios photos so you can more easily help me out.

    http://imageshack.us/photo/my-images/97/ramw.png/
    http://imageshack.us/photo/my-images/39/20111106174420.jpg/
    http://imageshack.us/photo/my-images/220/20111106174508.jpg/
    http://imageshack.us/photo/my-images/339/20111106174518.jpg/
    http://imageshack.us/photo/my-images/263/20111106174431.jpg/
  3. 9/10 it's Rated DDR3-1866 9-9-9-24-2N @ 1.65v (GUESSING), use CPU-z SPD tab to see the CAS and DRAM Voltage for the kit.

    I posted everything you need to set; example:
    System Memory Multiplier -> 14 ; currently 8*133.33MHz = 1066MHz
    DRAM Voltage-> 1.64v
    etc

    It appears you set the CAS to my 'GUESSED' Timings, remember ALL sets are not the same which is why I placed above examples.

    So IF you post the CPU-z SPD then I'll in-turn post the correct memory settings, but the idea above is still the same.

  4. And while there is a good chance your RAM might OC to 1866 MHz. there is no guarantee.
  5. In the images I noted several non-standard settings, and they 'can' cause issues especially too low a vCore.

    The following are the 'typical' settings for Gigabyte for DDR3-1866.

    EXAMPLE SET: 1866 MHz 9-9-9-24-2N @ 1.65v

    CPU Clock Ratio -> 17 ; optional use if unstable
    BCLK Frequency -> 160MHz ; optional use if unstable


    System Memory Multiplier -> 14 {assuming BCLK 133.3MHz} ; 12 {assuming BCLK 160MHz}
    /1866MHz / 160MHz = 11.67 rounding-up 12, most GA MOBO's are even number Memory Multipliers. 12 * 160MHz = 1920MHz (960MHz in CPU-z) which is a slight OC above rated.
    DRAM Voltage -> 1.64v ; closet value per menu to 1.65v

    CAS timings:
    DRAM Timing Selectable (SPD) -> Quick
    CAS Latency Time -> 9
    tRCD -> 9
    tRP -> 9
    tRAS -> 24
    Command Rate(CMD) -> 2
    --

    QPI/Vtt Voltage -> Auto ; 1.28v~1.35v if unstable
  6. I'll try some of those things out. Here is SPD picture for you.

    http://imageshack.us/photo/my-images/59/raminfo.png/

    P.S.: I appreciate your help a lot, since I'm a complete noob.

    *UPDATE: I have tried all the settings and possible combinations that you gave me. Computer always freezed on the part where Windows logo flies on the screen (before welcome screen).
  7. The correct timing from above. As I mentioned you also made other changes.

    tRAS -> 26


    BIOS:
    Load Optimized

    CPU Clock Ratio -> 17
    BCLK Frequency -> 160MHz

    System Memory Multiplier -> 12

    DRAM Voltage -> 1.64v ; closet value per menu to 1.65v

    CAS timings: {make sure Channel A & B are set the same}
    DRAM Timing Selectable (SPD) -> Quick
    CAS Latency Time -> 9
    tRCD -> 9
    tRP -> 9
    tRAS -> 26
    Command Rate(CMD) -> 2
    --
    QPI/Vtt Voltage -> 1.30v

    Make certain the RAM is installed in the proper DIMM slots:
  8. I'll try the new settings. Well if I set SPD to ''quick'', then I can only set the channel A category. Do all channels (A,B and C) have to have same numbers?

    I believe Ram is installed properly in the dimm slots. CPU-Z also tells that they are placed in spot 1,3 and 5. I have 3 ram sticks. So they are set correctly. Btw, what does Double-sided or Single-sided mean?

    *Update: Tried those settings, again computer fails to get into the windows (freezes at flying logo before welcome screen). Just for the hell of it, I lowered Ram multiplier to 10, getting 1600 mhz ram and computer succesfully booted, one very quick prime 95 (just 3 minutes) showed no mistakes or errors. CPU got in 90°C under prime 95 tho.
  9. I assume you lowered the CPU Clock Ratio -> 17; my assumption is you have it set to something else e.g. 20 * 160MHz = 3.2GHz which is fine but there additional settings that are required. You need to do (1) thing at a time.

    Anyway, something else seems to be making changes in the BIOS; uninstall applications like EasyTune or ANY BIOS invasive application -- they counterman anything you set in the BIOS. In addition, set the SATA to AHCI then run Fix It -> http://support.microsoft.com/kb/922976

    BIOS:
    Load Optimized
    SATA Ports (e.g. ICH SATA Control Mode) -> AHCI
    Extreme Memory Profile (X.M.P.) -> Enabled
    System Memory Multiplier -> Profile1
    Save & Exit = Yes

    Change nothing else!

    Once in Windows run Fix It -> http://support.microsoft.com/kb/9229
  10. Hey, I deleted Easy Tune. I don't quite understand what you mean with your last post. I did exactly what you told me last time. Set CPU clock ratio to 17 and everything you said... Well, pc freezed before welcome screen with no message. So I tried with memory multiplier 10, which set my memory to 1600 mhz. After that, I set all my settings back to stock (loaded optimized settings)

    To how much do I have to set CPU clock ratio now? (I just leave everything alone after optimized settings?)
    Also, what does putting Sata Ports to AHCI do?

    *Update: I set everything like you said, but after I wanted to save I got an overvoltage warning, so I didn't accept any settings. Are you sure that it is safe to accept those settings? I don't want to damage any components. It seems that XMP doesn't set everything correct.

    http://imageshack.us/photo/my-images/843/20111108024601.jpg/
    http://imageshack.us/photo/my-images/854/20111108024727.jpg/
    http://imageshack.us/photo/my-images/834/20111108024757.jpg/

    So what should I do, accept those settings or not ?
  11. EasyTune - problems, you manually set changes to the BIOS -- the utility overwrites them and/or conflicts with them -- whether you run the App or not.

    You obviously did NOT Load Optimized e.g BCLK, however the 1.65v DRAM warning is fine to use so say Yes.
  12. Hey I did load optimized but XMP sets it to 135 etc...

    I have a problem. I set everything to AHCI just like you said but now my IDE channel 0 master and ide channel 0 slave are deleted.

    This is how it looked before:
    http://imageshack.us/photo/my-images/266/20111106174403.jpg/
    This is how it looks now:
    http://imageshack.us/photo/my-images/259/20111108183438.jpg/
    after I've used those settings:
    http://imageshack.us/photo/my-images/253/20111108183413.jpg/

    My computer windows also fails to load with AHCI. It says that it doesn't detect any drive. Flying windows logo comes to the screen and then system reboots. For some reason it doesn't want to detect any drive??
  13. Oh nevermind! I finally got it. I am successfully running on ACHI now.

    XMP overclock still doesn't work tho, computer freezes at flying logo screen. At this moment I'm just using my computer on ''load optimized'' option with ACHI on.
  14. jaquith said:
    EasyTune - problems, you manually set changes to the BIOS -- the utility overwrites them and/or conflicts with them -- whether you run the App or not.

    You obviously did NOT Load Optimized e.g BCLK, however the 1.65v DRAM warning is fine to use so say Yes.


    So what are the next steps after enabling AHCI?
  15. Sorry, I have been overwhelmed with my business.

    IF I have a problem setting AHCI then I go in the Registry and manually change the Start = 0 values, shutdown and immediately boot into the BIOS and set everything to AHCI, save the BIOS settings and boot into Windows. Lastly, I schedule and run SFC as below.

    IF I have a problem Booting into Windows then I run 'Windows Recovery' F8 boot off the Windows DVD and select Startup Repair -> http://windows.microsoft.com/en-US/windows7/What-are-the-system-recovery-options-in-Windows-7

    AHCI Registry Keys:
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\IastorV

    Start values = 0 (zero) ; ref http://support.microsoft.com/kb/922976


    Good Luck! :)

    SFC:
  16. Hey, I have forgot to put HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\IastorV to 0. So I did that now.

    After restart my C drive magically stole about 6 gb from D drive lol (well my C drive had only 1 gb left lol).
    Then after I did Local disk check and restarted, my disk C size returned back to old. This is supposed to happen I assume?

    Well... all steps done, what next?
  17. Well if the RAM is now running at DDR3-1866 and the HDD's are working -- you're done! :)

    I would run the 'SFC' procedure as above and schedule the checking both options. Keep in mind depending on the size of the HDD this procedure can take 30 minutes to 1-2 hours.
  18. As I've said before, I still can't run memory at 1866 mhz because Windows freezes at startup.
  19. It freezes-up when you only add the following:

    Extreme Memory Profile (X.M.P.) -> Enabled
    System Memory Multiplier -> Profile1
    Save & Exit = Yes
  20. jaquith said:
    It freezes-up when you only add the following:

    Extreme Memory Profile (X.M.P.) -> Enabled
    System Memory Multiplier -> Profile1
    Save & Exit = Yes


    Yes, I have everything at default. I have only set XMP to profile 1 and my computer freezes at startup with XMP profile 1 on.

    P.S: Why are my hard drives after changing iastorv to 0, changing their size after every restart? My E drive came from 15 gb to 85 mb after restart? My C drive also almost every second computer restart, steals about 7 gb from D drive. Hard drive numbers appear to change every restart...
  21. Still looking for ideas...
  22. Lets start from scratch:

    1. Shutdown and move the SATA cables like musical chairs ; e.g. 1->3, 2->1, 3-> 2 ; use only the top 4 SATA ports closet to the CPU. This resets ALL the drivers.
    2. Clear CMOS use the Clr CMOS button; see -> http://www.youtube.com/watch?v=rdHH9KrceR0
    3. Boot into Windows, and set BOTH Start values = 0 ; see above
    AHCI Registry Keys:
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\IastorV
    4. Minimum BIOS settings:
    Load Optimized
    System Memory Multiplier -> 14
    DRAM Voltage-> 1.64v
    ALL SATA Ports -> AHCI
    Save & Exit = Yes
    5. Boot into Widows -- let me know...
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