trefs

Hi
I have three ram of 2GB installed on each A1 and B1 and C1 but only 4GB are recognized in bios and windows 7 64bits but cpuz recognize 6gb

my ram: http://fr.crucial.com/eu/store/mpart...270F2AA5CA7304
my cpu: http://ark.intel.com/Product.aspx?id...ec-codes=SLBEN
what setting to change in my bios please
sorry for my english

eva2000

what does windows task manager, memtest86+ DOS and cpu tweaker say ?

could be just normal windows pci-e device consumption as per point #7 at http://i4memory.com/ramdetect and [info] Windows 7 usable memory less than physically installed memory

trefs

hi
thank's
memtest86+:
no errors
memory: 4087mb 7901mb/s
memory spd information
-slot0: 2048mb pc3-10600
-slot1: 2048mb pc3-10600
-slot3: 2048mb pc3-10600

eva2000

so looks like probably voltage/settings related

I never used that particular motherboard so not entirely sure but some suggestions

Asus intel cpu forum http://i4memory.com/f54/ has sticky threads with bios templates, pick one template closest to your bios format, and use that bios template format to post the settings you have tried as well.

as to voltages you don't want to leave them auto but set them to lowest manual option available to start with i.e.

so try playing with QPI/DRAM voltages between 1.25-1.4v to see if it helps as per outlined at http://i4memory.com/ramdetect/ as loosen timings to 9-9-9-24 2T first until you consistently get full amount of installed memory detected, then start tightening timings and adjusting voltages as per http://i4memory.com/f54/announcement...y-eva2000.html and Intel Core i7 920 Overclocking Introduction Guide on X58 (both links also listed at http://i4memory.com/ramdetect

point #3 at http://i4memory.com/ramdetect refers to link at Asus P6T Deluxe V2 BIOS settings help please...

kurusutomari

If the 8pin CPU Power jack on your mobo is fully plugged. Plug off the left 4pin adapter.

It solved my only 8GB of 12GB memory recognizability.