I've been using this ASUS p6t deluxe + i7 920 + 3x2gb G Skill DDR3 1333 for more than 2 years without any issue. A few months ago, I added 3 more dimms, the exact same brand and model, bought from the same vendor and when I put them, strange things started to happen. Putting 5 dimms gave me 10gb, but putting 6 dimms gave me 8 or 4gb. The strange thing is that in bios it reads that low number, but Everest or similar windows tool will show all the dimms populated.
I've been fighthing with this issue for a while, and I'm not alone. http://i4memory.com/ramdetect/
HERE is the strange thing. I found out a workaround: when starting the computer on the morning, it will detect 4gb only. Entering in the bios and changing from 1333 to 1666, and then exiting the BIOS makes the machine to turn off and on again, and there you go, 12gb. But next day it will happen again. only 4gb. So, the same procedure works. go to bios, change again from 1666 to 1333 and voila.
Of course this workaround its really unfriendly, so I'm looking for any clues on WHY this workaround works?
Things already tried:
- Changing dimms from bank to bank
- Pushing harder
- Loosing/tightening CPU cooler screws
- Changing (elevating) voltages of RAM and CPU
- Loosening timings from RAM spd
- Bios is 2101 , there is a new one but only adds support to new cpu's
This happens with no overclocking or any other non default settings too. Any thoughts?