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CPU mutliplier resets to default after reboot

post #1 of 15
Thread Starter 
My system:
Gigabyte GA-Z68XP-UD3P
i5-2500K
GSkill Ripsaw 2X4 1800 RAM
CM Hyper 12 EVO
MSI 550 GTX-TI
Kingston Hyper SSD IRST cache of Seagate HD
Win7 64 on SSD

I built the system a few days ago and have started to try to OC. All CMOS settings are Default Optimized (except RAID).

As I have increased the multiplier to 38X, 40X, 42X and run Prime95, everything is good so far. I.e. haven't upped voltage yet.

My problem is that when I reboot the system the CPU frequency reverts to 33X. That is no good

Any thoughts?

Thanks.
post #2 of 15
Are you saving your settings in the BIOS correctly. Have you tried updating the BIOS?
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post #3 of 15
make sure you are setting the correct qpi/vtt voltage in the voltage settings page. I'm guessing you are using a xmp profile for the memory speeds? we have noticed these boards do not set that voltage correctly when the xmp profile is applied. lso it seems your memory kit was spec'd for a different platform. What speed does it show it running in the bios?
    
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post #4 of 15
Thread Starter 
I did update the BIOS to F6.

It is not a question of saving the CMOS settings as it settings are valid the first time.

If I change the CPU Clock Ratio from 33X to 40X, save and exit, then it runs at 4.0 until I reboot. Then it is back to 33X.
post #5 of 15
Check the CMOS jumper, is it in the correct slot?
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post #6 of 15
Quote:
Originally Posted by BigGuy7408 View Post

I did update the BIOS to F6.
It is not a question of saving the CMOS settings as it settings are valid the first time.
If I change the CPU Clock Ratio from 33X to 40X, save and exit, then it runs at 4.0 until I reboot. Then it is back to 33X.
Quote:
Originally Posted by BigGuy7408 View Post

All CMOS settings are Default Optimized (except RAID).



That is what I am trying to tell you. You need to manually adjust the memory controller voltage. The stock optimized , at least on my board which is the same as yours wasn't correct. Are you getting the overclock failed message when you boot?
Edited by midad04 - 1/10/12 at 7:07pm
    
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post #7 of 15
Thread Starter 
I'm still at a loss.

1. The problem isn't the CMOS jumper. The pins are open, i.e., there is no jumper.

2. As for the suggestions that I need the correct voltage settings, where do I find what they are supposed to be.
The QPI/VCC is set to Auto and shows 1.05
VCore = 1.25
Mem freq +1600

It doesn't seem like I a voltage problem with the moderate overclocking. I ran Prime95 overnight with the CPU Ratio set to 40X and it ran without a problem.
I do not get overclock/ boot failed messages

I changed several other CMOS settings, e.g. Turbo mode, to see if they reverted back to the default at reboot but they don't. Only the multiplier seems to change, although I haven't tried changing voltage or memory timings.

It appears to reset during the shut down. If I go into the CMOS and make the change, e.g. to 40X, then save and exit and start, the system runs at 4.0 until I shut down. I have been making the changes in the CMOS, but have pulled up TouchBIOS to check the status.

TouchBIOS shows the correct multiplier, but I have not been able to make changes with TouchBIOS. I guess that is not surprising in that once I shutdown/reboot the system reverts bask to to 33X.

I sent a message to Gigabythe tech support. I wonder if I will hear anything from them.

Scott
post #8 of 15
the qpi/vtt is in the advanced voltage settings in the bios

1.05 is too low for the memory speeds you are running. Set it too 1.2 and you will be fine. Some memory actually specifies what this voltage should be set too, at least my kingston blue hyper x 1600 does, they specify 1.2v the xmp profile says it changes this value but it does not actually do it.


Also are you running the xmp profil, or did you just change the memory multiplier to 16? Also I have no idea what optimized or turbo does. on all of the different computers I have built over the years, I have always left those settings on default and manually overclocked them with fsb or multiplier, or directly editing the mem timings
Edited by midad04 - 1/11/12 at 2:40pm
    
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post #9 of 15
Thread Starter 
I am not running the XMP profile - it is set to diabled

Also, all of the setting are the default settings except the multiplier. Most of the settings are, however, "Auto."

I will try changing the memory voltage, but that doesn't make sense to me. It seems like if I was having memory problems, I would get some other problem, BSOD, failure to boot, Prime95 freezing, vice simply not saving the multiplier setting during shutdown.
Edited by BigGuy7408 - 1/11/12 at 3:13pm
post #10 of 15
If you want to be running the memory at anything faster than 1333 and not be setting the timings or voltage manually, you should be using the xmp profile. Before I set my qpi/vtt voltage to 1.2 I was getting all kinds of weird issues on boot. Reset to defaults on the bios- post loops etc.

just to be clear the qpi/vtt not the memory dimm voltage
Edited by midad04 - 1/11/12 at 5:39pm
    
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