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Only picking up 4gig insead of 6gig - Page 2

post #11 of 25
going from CAS down set to 8-9-8-24-8-88 and the rest leave on auto except for Timing Mode which needs to be at 1N not 2N

Leave 2nd and 3rd information all on default.

i dont know what you meant by having your CPU VTT at 1.88v cos that would kill your i7, can you please post up your voltage options?
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post #12 of 25
Thread Starter 
Okay so what should I set my CPU VTT to?

I have QPI/DRAM voltage and CPU VTT voltage

My QPI/DRAM is at 1.5125 (1.475 with vdroop) and my CPU VTT is at 1.88125 (not shure with vdroop)

What should I change my settings to?

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post #13 of 25
Thread Starter 
Oh wait, I think I am getting confussed with CPU PLL and CPU VTT

I think its my CPU PLL volts that is at 1.88125

Is that okay?
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post #14 of 25
Thread Starter 
Confirmed, it is my CPU PLL volts not VTT

Is 1.8125 okay and should I up it or not?
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post #15 of 25
Thread Starter 
I went into BIOS and I set it to 8-9-8-24-Auto-88-1N

It still inst working

The reason for auto after the 24 is because the highest I can select there is 7
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post #16 of 25
Thread Starter 
I got it work, I just bent one of the CPU pins that wer skew

I had to set it back to what it was though coz the 88 and the 1N was making it bsod

Any suggestions?

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post #17 of 25
Thread Starter 
Hey Guys,

I booted up my PC today and it is showing 4gigs?

I'm really confused

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post #18 of 25
I have struggled with this with a 980X for a couple of days so I think I can get this solved

1) Bent CPU pin. Make sure that you don't have any. and drop in your CPU carefully. It seems you have already done that.
2) CPU cooler. make sure that you did not overtighten it. I've had problems with my cooler not tighten uniformly. Try to impose the same pressure on all four screws.
The above two problems will get you a consistent drop of memory amount. i.e. every time you boot you will lose the same amount of memory.
If the amount of memory detected comes and goes, it is not a hardware problem, it is your IMC being too weak for the memory speed/timing you are using. Basically it cannot handle it.

3) Try dropping the memory frequency a bit. try 10MHz at a time. If your memory suddenly re appears and remains consistently fully detected then you are good. If you want to raise the memory frequency, you will have to raise a mix of: VTT(or QPI) voltage and the PLL Vcore. I realized that my chip needed a little less PLL Vcore increase than VTT. Example: I needed 1.4V VTT with 1.2V PLL but only 1.325V VTT with 1.225V PLL.
4) Try loosen your timings to see if you can find a sweet spot with your frequency.

When you found your setup, make sure to run at least 1 loop of memtest86+.
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post #19 of 25
you shouldnt need a CPU PLL of 1.88v. sometimes having CPU PLL and QPI PLL higher than stock can cause instability nor improve it. in fact it goes so far as in some cases decreasing the CPU PLL and QPI PLL has improved stability (weird or what?). in any case your CPU PLL and QPI PLL should be left at 1.8000v and would only be touched if all other voltages have been tested.

Your CPU VTT however can be increased to 1.45v max. your CPU VTT voltage supplies your IMC (internal memory controller). increasing this voltage will help stabilize faster and tighter memory as well as improve stability with more than one stick (if you are running 2gbx6 sticks then increasing the CPU VTT is needed in 70% of cases. some i7's need this for just 3 sticks also). if however you need over 1.45v CPU VTT to keep your memory stable then you need to look at other options, like only using 2 sticks, or only using dual channel.
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Finally Finished!
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Intel i7 3930K Batch: 3135B495T Gigabyte X79 UD7 GTX 570 3-way SLi Corsair Vengeance 1600mhz CL9 
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post #20 of 25
Thread Starter 
Okay Guys,

Eliminating problems for top to bottom, I Have taken a pic of the CPU socket, could you tell me if any of the pics are bent?

I have put a red circle around the pin I bent back

If the are straight then I can try and remount my CPU cooler properly



Thanks for all the help so far guys

Mikrouwel
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