OS: OpenSuse 12.3 (x64)
Problem: Unable to use all detected memory
I recently bought some more RAM for my workstation (2Rx4). The motherboard has 8 slots, and while BIOS recognizes that all 8 have a 2GB stick of RAM, the "Total Installable" is only 12GBs.
dmidecode tells me the maximum supported RAM is 32GBs, so I suspect this may be a rank issue, although I'm not super familiar with memory.
To be explicit - does anyone have any ideas why I am unable to use all the detected memory?
I had 8GBs before in a 4x2GB configuration.
2GB 240p PC2-5300 CL5 36c 128x4 DDR2-667 2Rx4 1.8V ECC FBDIMM
All 8 slots are registered as active (see
dmidecode output) and the BIOS detects all 8 sticks
Base Board Information Manufacturer: Dell Inc. Product Name: 0GU083 Version: A00 Serial Number: ..CN1374073H00UP.
Available memory (BIOS also says 12GB installed memory, but lists 8 2GB sticks)
total used free shared buffers cached Mem: 12039 11888 151 0 549 10825 -/+ buffers/cache: 512 11527 Swap: 1992 573 1419
memtest x86 only detects 12GBs of memory too;