Hi all Following on from this thread:- http://forums.overclockers.co.uk/showthread.php?t=18060775 Task Manager says I only have 3Gb. Yet Windows System Settings says 4Gb and also CPU-Z says 4Gb. However I noticed my \MAXMEM setting for Boot is also limited to 3Gb. I've checked in the BIOS (DFI Motherboard) for a Memory Remapping option but do not have one. The only thing I can see that is not DRAM timings is a Memory Hole 15M-16M option. Is this it? Thanks all!