I was told that missing RAM (as seen in Linux) on Dell systems is due to RAID cards taking it up. Is this true? And why is it the case? I thought RAID cards usually have their own memory. e.g. (if you divide to 1024, you don't exactly get 8G) 2950: $ cat /proc/meminfo MemTotal: 8165900 kB 2650: # cat /proc/meminfo MemTotal: 8053752 kB -Andrey