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My 1866 mhz ram is downclocked to 1066 mhz

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November 6, 2011 8:31:40 PM

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
a c 347 } Memory
a c 716 V Motherboard
November 6, 2011 9:01:20 PM

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
November 6, 2011 10:26:51 PM

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/


Related resources
a c 347 } Memory
a c 716 V Motherboard
November 6, 2011 10:44:50 PM

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.

a b } Memory
a b V Motherboard
November 6, 2011 10:47:16 PM

And while there is a good chance your RAM might OC to 1866 MHz. there is no guarantee.
a c 347 } Memory
a c 716 V Motherboard
November 6, 2011 11:43:35 PM

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
November 7, 2011 4:00:18 PM

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).
a c 347 } Memory
a c 716 V Motherboard
November 7, 2011 6:46:04 PM

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:

November 7, 2011 9:00:23 PM

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.
a c 347 } Memory
a c 716 V Motherboard
November 7, 2011 10:30:19 PM

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
November 7, 2011 11:23:21 PM

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

So what should I do, accept those settings or not ?
a c 347 } Memory
a c 716 V Motherboard
November 8, 2011 1:16:55 PM

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.
November 8, 2011 3:51:08 PM

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

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??
November 8, 2011 11:11:22 PM

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.
November 9, 2011 10:16:30 PM

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?
a c 347 } Memory
a c 716 V Motherboard
November 11, 2011 3:49:19 PM

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-th...

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:
November 13, 2011 10:20:45 AM

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?
a c 347 } Memory
a c 716 V Motherboard
November 13, 2011 2:04:43 PM

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.
November 13, 2011 3:18:07 PM

As I've said before, I still can't run memory at 1866 mhz because Windows freezes at startup.
a c 347 } Memory
a c 716 V Motherboard
November 13, 2011 4:42:39 PM

It freezes-up when you only add the following:

Extreme Memory Profile (X.M.P.) -> Enabled
System Memory Multiplier -> Profile1
Save & Exit = Yes
November 13, 2011 5:41:36 PM

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...
November 17, 2011 9:30:29 PM

Still looking for ideas...
a c 347 } Memory
a c 716 V Motherboard
November 17, 2011 10:37:06 PM

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...
!