new 2 gig ram info is Part number
What do you mean? Are you trying to use one CM2X1024-5400C4 (667 MHz, 4-4-4-12 and 2.0V) module and one CM2x2048-6400C5 (800 MHz, 5-5-5-18 and 1.9V) module at the same time? If so, then you need to configure the RAM as per the CM2X1024-5400C4 specs and hope for the best. Unfortunately you didn't provide that important info in your original post.