So...I have just finished building a setup with an X79, a 3930K i7, GSkill Ares 2133Mhz 4x 4GB sticks (16GB total), among other things.
The problem i seem to be having is that the BIOS is not registering all 16GB of ram, instead only 12GB.
I went into Tools and checked out the "Asus Dram SPD information" and it is giving me an "Abnormal" warning for the DIMM-D1 slot.
I have tried taking the Ram out of the slot and re-seating it 3 times now.
I also swapped ram sticks around to see if it was a ram problem but the "abnormal" error still remains for the DIMM_D1 slot.
The ram was running at 1920Mhz, so i dropped it down to 1600 something but that didnt do anything.
when i look in CPUz its telling me theres a full 16GB there, but Windows system info says the same as BIOS (12gb).
So yeah, its a bit of a pickle, a frustrating time consuming pickle.
If anyone knows something that could help, please do
Hmmm...instead contact the Retailer and RMA the G.SKILL you have a bad stick. I am becoming less and less a fanboy of G.SKILL. A simple test is to swap stick around and if a different slot is 'bad' i.e. abnormal then it's the RAM not the MOBO.
I assume the AI Overclock Tuner -> XMP and Profile 1 is being used.
Knock on wood I've had my hands on a few ASUS Sabertooth X79's and it's typically the other components that are the root issue.
Heres a quick update on the situation:
I removed everything and set the motherboard up on a block of foam, attached everything and ran it with all 16gb of ram (i had a feeling something may of been shorting out). That didnt work, BUT!
I re-seated the cpu and cleaned some of the thermal paste away (it had spewed out a bit) and im currently running it on 4gb (1 stick) in the slot (DIMM-D1) that was previously not working.
so yeah, that a bit wierd, im going to shut down and add another stick of ram, hopefully progress in that fashion
motherboard is now recognizing all 16gb!
im not %100 what fixed the problem but what i did to get to this point was:
Remove the motherboard, stick duct tape over each mounting hole (i had a funny feeling there was a ground/shorting issue).
Re-seated the cpu and made sure there wasnt a ton of thermal paste.
Re-assembled the rest of the pc and booted up