I had this issue on my asus p6x58d-e with 6 x 8gb sticks. I was getting about 32gb of memory showing up when I definitely had 48gb available. I would sometimes have to move pci-e cards around to prevent memory from disappearing or use different types of cards.
I took apart all the components...
damnit. so I checked this thread randomly after not being on hardforum for years. and guess what, my x58 asus board with a 980x is reporting 16gb out of 24gb and my overclocks have needed ridiculous amounts of voltage to even be unstable. so I think I'm throwing in the towel on x58.
what is the...
this on its own is a ridiculous idea. in 1000 years, they'll store all 40pb on a single "hard drive", what hard drives are in the future. you only have to worry about 50 years tops, and transfer it from there.