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ASUS Support Home Location : Forum > Motherboard > Rampage III Extreme  
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  Topic : [Problem]Only 8G ram out of 12G seen New Topic
benjamin
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Posted:5/30/2010 9:15:00 PM # 1
Installed 2 sets of Kingston KVR1333D3N9K3/6G, only 8G is showing up. Any idea what's wrong?

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vläd
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Posted:5/30/2010 11:09:00 PM # 2

Quote:
Author: benjamin Posted: 5/30/2010 9:15:00 PM

Installed 2 sets of Kingston KVR1333D3N9K3/6G, only 8G is showing up. Any idea what's wrong?

Do you have XMP enabled in the BIOS? What's the rest of your rig configured with? What OS and vid cards etc.?

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benjamin
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Posted:5/31/2010 2:27:00 PM # 3
Not sure about XMP in the bios. I am out of the box and build it guy. 980X Asus Nviaia 960GT Win7 x64 I am seeing alot of mention about power setting for the ram, however not a OC expert to understand the lingo. cheers

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vläd
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Posted:5/31/2010 11:27:00 PM # 4
You're probably need to learn the BIOS settings to get everything working properly. Here's the section from the manual that you need to review...

http://img248.imageshack.us/img248/6653/pagesfrome5246rampageii.jpg

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benjamin
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Posted:6/1/2010 6:46:00 AM # 5
Thank you, I have seen this and been adjusting the settings.  DL Memtest86 iso and booted, can see all 6 sticks of ram without problems, however only 8g ram still being found.


screenshoot - http://roppongi.org/NEC_0143.jpg

Quote:
Author: vläd Posted: 5/31/2010 11:27:00 PM

You're probably need to learn the BIOS settings to get everything working properly. Here's the section from the manual that you need to review...

http://img248.imageshack.us/img248/6653/pagesfrome5246rampageii.jpg

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vläd
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Posted:6/1/2010 11:45:00 AM # 6
Have you updated to the latest BIOS? (download here)

If you have enabled XMP profile and you are up to date with the 0602 BIOS, and you are still only seeing 8GB of RAM, then you should probably contact Kingston for further recommendations for bumping the voltage a bit on your RAM.

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benjamin
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Posted:6/1/2010 12:11:00 PM # 7

Quote:
Author: vläd Posted: 6/1/2010 11:45:00 AM

Have you updated to the latest BIOS? (download here)

If you have enabled XMP profile and you are up to date with the 0602 BIOS, and you are still only seeing 8GB of RAM, then you should probably contact Kingston for further recommendations for bumping the voltage a bit on your RAM.


Yes on 0602 and set XMP, still no go. Other people are having the issue with the same ram and the Revenge 2 board as well... This ram is listed as the supported RAM in the RAM PDF for the board. Thought this should be a piece of cake to have this sorted. Will ping Kingston support next, even though they say they support the MB as well...

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benjamin
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Posted:6/2/2010 2:31:00 PM # 8
Kingston is suggesting - manually set the timings to 9-9-9-27 and voltage 1.5. Will try this tonight.

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Kensek
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Posted:6/2/2010 6:03:00 PM # 9
Set the volts and the timings manually and do not use XMP.

Probably the most critical voltage that needs to be set manually is the QPI/Dram or sometimes labelled the QPI/Vtt.   Set this at 1.25v and work your way up to 1.35v.

Use the lowest voltage that you can.

Also set the Dram voltage somewhere between 1.50 to 1.60v.

So the first thing I would do would be to set the DRAM voltage to 1.60v and the QPI/Dram to 1.35v within BIOS and save it.

Now reboot and see if all 12GB are being shown.

If they are and you are stable then slowly scale back .02 volts on each voltage setting.
Try 1.58v on the Dram Voltage and 1.33v on the QPI/Dram voltage.

If still stable go down another .02v.

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benjamin
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Posted:6/4/2010 8:59:00 AM # 10
ok will give this a go and report the results. cheers

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