Asus P6T Deluxe V2 and 12GB RAM=Problems!(Bios and Vista only see 8GB)

Hi,

I have a Asus P6T Deluxe V2 motherboard. I bought two kits of Corsair TR3X6G1600C8 G. Each kit was 3x2gb RAM. I have a total of 12gb of RAM. In vista it says 8gb. The bios says 8GB. CPU-Z says i have 12gb. So i decide to call Asus support. They say the memory controller is faulty. Since the memory controller is in the CPU. He said i had to get a new cpu basically. Please Help!!

I had the same issue with my motherboard and 12gb (same mb as yourself). I rang Asus and they wanted to RMA the mb, then I saw another thread that said it doesn't like the whole 12gb being put in all at once.

It was an odd process but I actually got it working, I slowly upped the amount of ram booting each time to ensure it was detecting it. Then at 8GB + it wouldn't boot at all (beep beep), took a stick out, worked, put it back in, failed, swapped a couple of sticks round, worked, added the final stick, bingo, now detecting 12gb, memtest says everything is good. Very bizarre.

Do post back here when your done and let us know how you got on with the RMA anyway.

PS - I also had to up the DRAM Bus Voltage

Fingers crossed mate, nothing worse than RMA'ing your motherboard, a royal pain in the backside. Keep me posted! Oh another thing, I thought our motherboard didn't support all slots with 1600 RAM

"Due to Intel spec definition, XPM DIMMs and DDR-3 1600 are supported for one DIMM per channel only." - that's 3 slots filled. However I've read plenty of people getting away with this fine, in case that helps.

I was getting the same issue with my board but when it was cold it would show 12gb at bios and WRC7 and once on for awhile if I rebooted it would drop to 8gb at Bios and Wrc7. Went crazy trying to solve the issue did everything checked pins, reseated cpu several times, checked ram , tried different ram, messed with timings . Finally I put a memory cooler on and for crying out loud 12gb shows even after being on for several hours using 3dsmax, Mudbox and video editing. Many reboots and upping my ram to 1600 still no trouble...Not sure if its a heat issue or if the cooler is putting pressure on the dimms making for better contact. Going to try a spot fan aimed at the ram without the cooler to see whats up. By the way using a OCZ XTC2.


Dougie T